Follow TV Tropes


Web Video / React

Go To
"Kids React to... Websites!
This episode: TV Tropes!"

React is Exactly What It Says on the Tin; various people of either different age groups or Internet fame are show viral videos, popular songs, YouTube stars, video games, technology, and so on, and react to them. The franchise was created by the Fine Brothers (Benny and Rafi Fine) and is produced by the company they founded, currently known as React Media.

As of 2018, the React franchise currently comprises eight series (along with two discontinued series):

  • Kids React (October 16, 2010–present) – The series which launched the franchise, in which children from 4 to 14 years old react to various videos. This series won a special Daytime Emmy Award in 2012 for "Best Viral Video Series" — and it was no slouch in winning this, either, considering that the series went up against the likes of Epic Meal Time, CollegeHumor's Jake and Amir... and "Can't Hug Every Cat".
  • Teens React (November 17, 2011–present) – When teenagers that had been featured on Kids React enter high school, they "graduate" to this spin-off, the second age group for the metaseries. Teens React is based around a similar principle as its original parent series, but features teenagers ages 14 to 19. (After they graduate from high school, members of the Teens React cast can remain on the series until they turn 20.)
  • Elders React (May 24, 2012–present) – The third series in the franchise, which obviously features senior citizens ages 55 and up in the main roles.
  • YouTubers React (December 6, 2012–present) – Essentially bringing the series' full circle with the site that carries it, the fourth series in the franchise features various YouTubers reacting to pop culture trends and viral videos.
  • React to That (December 15, 2014–January 1, 2015) – Aired on Nickelodeon. It basically has the same premise as its predecessors but with additional activities such as games and challenges.
  • Adults React (July 16, 2015–present) – Announced by the Fine Brothers in the early summer of 2015, the fifth series in the franchise features a cast composed of parents and younger adults (including former Teens React cast members who "graduated" to this series once they turned 20).
  • Parents React (August 6, 2015–present) – The sixth series of the franchise, this Adults React spin-off features parents who also appear on the parent show reacting to pop culture trends and viral celebrities popular with children and teens.
  • College Kids React (June 23, 2016–present) – A spinoff of Adults React, featuring a cast that includes Reactors now attending college who either continue to also appear on Teens React or have also graduated from Teens to Adults React.
  • Celebs React (November 1, 2016–June 5, 2017) – The metaseries' eighth series, it originated on August 14, 2014 with the release of a special called "Celebrities React to Viral Videos", which obviously featured more mainstream, non-Internet celebrities. The show was relaunched on Fullscreen's subscription VOD streaming service (which was shut down one year later) on November 1, 2016, and ran for two seasons. However, the main YouTube series continues to feature guest appearances of mainstream celebrities.
  • Generations React (February 27, 2018–present) – The ninth show of the metaseries, it originated on November 6, 2016 with the special "Generations React to Election 2016," in which kids, teens, adults and senior citizens discussed the election of Donald Trump to the presidency. The series returned on a periodic basis on February 27, 2018, featuring reactors from Kids React, Teens React, Adults React and Elders React discussing pop culture trends, social issues and participating in challenges.

The React YouTube Channel also produces several spinoff segments featuring many of the cast members of the main shows:

  • React: Gaming (July 27, 2014–present) – The series features cast members from the various React series (primarily those from Teens React, College Kids React and Adults React as well as some segments featuring cast members from Kids React and Elders React) playing modern, retro and virtual reality video games in single player and sometimes multiplayer modes. Complete playthroughs of games are featured in "Let's Play" segments, which are uploaded as multi-part episodes released within the show's main upload schedule.
  • People vs. Food (July 31, 2014–present) – Originating as Kids vs. Food for its first two years before expanding to feature cast members from Teens React and Adults/College Kids React in 2016, it features Reactors tasting foreign or bizarre food or drink items, often closing with produces asking the participants whether they would recommend others to try the featured food. Occasionally, it features "Try Not to Eat Challenges," in which participants are challenged not to eat the various dishes presented to them during the segment.
  • Advice (August 2, 2014–present) – A recurring segment featuring cast members from the various React series giving advice to viewer-submitted questions.
  • Lyric Breakdown (August 7, 2014–present) – This series features groups of Reactors from one of the main series (with the exception of Kids React) running through the lyrics of a particular line-by-line, and are challenged to guess the song and artist and the song's meaning.
  • Opinions (August 14, 2014–present) – A recurring segment featuring cast members from the various React series giving their opinion on a particular question.
  • React Remix (August 21, 2014–present) – This series consists of remixed versions of select videos from the React series.
  • Try Not to Laugh or Smile (February 5, 2015–present) – A series featuring Reactors being challenged not to laugh or smile at the series of videos and other challenges they are asked to participate.
  • Do They Know It? (April 2, 2015–present) – A segment in which Reactors from the various series (with the featured groups varying depending on the episodes) are shown a series of videos, images or songs, and are challenged as to whether they know it or have heard of it.
  • FBE StaffReacts (April 9, 2016–present) – This series features FBE/React staff participating in various challenges.
  • Challenge Chalice (February 8, 2017–present) – Features cast members from Teens React and/or College Kids/Adults React features taking part in a challenge organized by the segment's producer.
  • The 10s (April 3, 2017–present) – A "top-ten list" segment in which Reactors from the various series (with the featured groups varying depending on the episodes) being shown 10 viral trends, or funny or interesting images.
  • Guess That Song Challenge (April 21, 2017–present) – A game in which two Reactors play against one another to guess the title of a song and its artist based on a short snippet of the song to earn points.
  • Poker Face (April 16, 2018–present) – A game in which two reactors with boxes containing good or unusual items in front of them must choose to keep or switch said items, with the other reactor making their decision based on the first reactor's reaction before both open them.

On January 27, 2016, the Fine Brothers released an announcement of a new project called React World that was intended to license the React brand to other creators that want to do react videos in the same vein as the brothers. However, this announcement was met with extreme backlash, with many people in outrage over what seemed like an attempt to claim profits over a whole genre of YouTube videos that they didn't even make. Although the channel suffered for quite a while, things seem to have gone back to normal, since they ultimately issued an apology and have cancelled plans for "React World".

All main React episodes can be found on Fine Brothers Entertainment's YouTube channel here. There is also a React YouTube channel as the current home for Kids, Teens, and Elders React's bonus videos, as well as special series featuring the reactors from those shows, over here. Finally there is the FBE2 channel that features behind the scenes footage, Studio Life blogs, the FBE Podcast, and community updates.

Right now, the current alternating schedule for the series is Teens React or YouTubers React on Sundays, and Kids React, Elders React, or Adults React on Thursdays.

So what examples of tropes have been used in the React shows?

    open/close all folders 

  • Actually Pretty Funny:
  • Aerith and Bob:
    • Kids has such names as Morgan, Emma, Athena, Samira and Brooke-Monae.
    • Elders has Diane, Don, Rock and Bill, versus Holgie and Yehuda.
  • An Aesop:
    • "Kids React to Controversial Cheerios Commercial" has the message that racism is unacceptable. They make a big point that the racist comments (which all ran with Insane Troll Logic) were posted almost 50 years after the March On Washington. The kids are shown as very upset, with one in tears about the whole thing.
    • "Elders React to Selfie" has an unusual one from Barbara, of all people, who points out that a mistake you make, such as a nude selfie, can very easily backfire on you later in life. This actually earned her the "Listen to your Elders" overlay.
  • Aloof Dark-Haired Girl:
    • While definitely dorky, Athena acts very refined and rarely tolerates shenanigans unlike her castmates. The same can be said to her Suspiciously Similar Substitute, Lydon.
    • While she has her dorky moments, the older and original Sydney has a tendency to be very straightforward, is often unattached to the featured video, and is overall very refined.
    • Emma R. notably becomes increasingly cranky as she grows older.
    • Nora is often very reserved - in the Smash Bros. Mêlée à Trois she got to, after defeat she just watches the other two fight silently. Fans even point out part of her appeal is the calm and soothing voice.
    • Resident emo-girl Alix seems to invoke this. She's naturally a blonde, and has dyed her hair in multiple colors several times throughout the show, but dark brown is her preferred (and arguably signature) look.
    • Rebecca Black is notably composed during her earlier appearances in YouTubers. Considering that a couple of the earliest videos of Kids have majority of its reactors not holding back on saying their opinions about her, there's probably a feeling of awkwardness (maybe even reservations) on her part for even appearing on its sister series.
    • Reina has a very refined demeanor and is always eloquent when voicing her opinions.
    • Notable subversions:
      • Mikaela, who has all the physical characteristics commonly associated with this trope (tall and very beautiful with matching Raven Hair, Ivory Skin) but she's far from being aloof, though she admitted that she was shy during her debut when reacting to it years later.
      • Tori, who is both very dorky and sassy but the former trait usually prevails on her. The same can be said for Becca.
      • The third and oldest Morgan, who has a tendency to be Hot-Blooded to really fit the trope.
      • Sheila, who has an Ice Queen demeanor but is actually a textbook Spicy Latina.
    Dylan: "Everyone thinks I'm Japanese, I'M NOT JAPANESE! (I'm) Indonesian! Now you know!"
  • And Starring: The name of the Special Guest is usually listed below the episode's title with a "Featuring" citation.
  • Animal Reaction Shot: Played for Laughs in the Cats React episodes. There have been two so far, and both times went well as one would expect. "Desperate" to get a decent Reaction Shot, both videos conclude with the Fines dressing few of the YouTubers cast in cat costumes.
  • April Fools' Day: 2014's "Cats React to Viral Videos". The video started with kittens on the Kids React set, then moved on to adult cats on the Teens React set, then finally "CatTubers React", which had some YouTubers React regulars appearing in cat costumes and makeup. 2018 had "Teens React to Nothing", where everyone keeps expecting the worst. 2019 had nothing reacts to teens react to nothing. which has no one reacting to last year's video, as in no one on the set but an empty chair and just the laptop.
  • Audience Participation: Almost every single topic is suggested by fans, although some viewers have negatively commented on the overwhelming preference for more recent topics. Some of the regulars on the React shows have even questioned why did viewers pick some of the videos they've watched, and have made pleas to the fans to pick something better than what they've put up with.
  • Awesomeness by Analysis:
    • During "Kids React to Gay Marriage", Dylan is the only reactor to figure out the episode's topic simply by watching the videos shown. And he did it before "Question Time" too.
    • After just one round, Ethan James figures out how to beat the 2nd enemy from Mike Tyson's Punch-Out!! by exploiting his attack pattern.
      • During the Jetpack Pro game of Happy Wheels, he figures out the physics and becomes the only teen to complete it without Ludicrous Gibs.
    • Lucas had never seen the Skip-It before, but after checking out the illustration on the side of the toy and a commercial, he mastered it.
  • Berserk Button:
    • William really does not like Rebecca Black.
      William: "For some reason, everything is her fault! Why is Gaddafi killing his own people? Oh, it's Rebecca Black's fault!"
    • Emma R. hates basketball.
    • Jaxon hates One Direction.
    • The bullying that was covered in Amanda Todd's video is a very understandable one. When asked if they had any words for the bullies, the teens were, unsurprisingly, furious and upset.
  • Big Fun: A number of the cast.
    • The original Morgan, who combined this trope with both Genki Girl and Token Mini-Moe during the earliest episodes of the series. Even when she matured, she still retains her sunny aura.
    • Adam mostly appears that he is having a lot of fun.
    • Jonathan seems like the nicest and funniest guy on all of Adults React.
    • Brandon, who is so chill he survived two Try Not to Get Mad Challenges unscathed, and provides hilarious quotes such as "I'm a young Mexican boy!".
  • Big Ol' Eyebrows:
    • Tom from Teens, later Adults.
    • Elle from Kids, and later Teens. (Yes, on a girl. She even talks about getting bullied for them when she was younger.)
  • Bilingual Bonus:
    • Maksim (not the piano player) says goodbye in his native Russian at the end of "Dragon Baby" as well as something a bit longer at the end of "Kids React to The Hobbit". Olga Kay does the same thing at the end of "YouTubers React to Vines".
    • Turns out Hannah Hart knows Japanese, who knew?
    • Jasser (Egyptian background), Nora (Syrian immigrant), and RNA (Iraqi background) speak Arabic; Labib (Pakistani-American) speaks Pashto; and Alberto, Luis, Magaly, Sergio, Sheila, and Tori (Hispanic) all speak Spanish or a bit of it (for some of them).
  • Black Comedy:
  • Borrowed Catchphrase:
  • Breakout Character: Likely due to being older, Lia Marie Johnson was significantly more popular than the other regular kids on Kids React—which is probably what led to Teens React, given that she appeared in the video that announced Teens React, and it didn't even stop there. Her popularity continued such that she actually moved series again to YouTubers React, the only reactor to ever make such a jump.
  • Brief Accent Imitation:
  • Brutal Honesty: Depending on the subject. It's even gotten its own overlay in some episodes; HARSH but TRUTH.
  • The Bus Came Back: Several departed reactors do come back eventually. Adults in particular mostly serves as a return platform for those who outgrew Teens React (more on that below).
    • There was a long period of time when Morgan was absent from Kids React, but then returned to the series a bit older. She's not on as much again, and hasn't appeared since 2015.
    • There's also Paris, who disappeared from Kids for a while before reappearing... on React to That instead. (after all, she was on Nick's payroll at the time)
    • Both Ethan James and Madison were long gone from Teens but show up right on time for the first Adults React episode.
    • Brianna was last seen on "Teens React to The Fault in Our Stars" two years before reappearing on "College Kids React to the 1975".
    • Ex-Teen Jourdan returned on "Adults React to Juju On That Beat". His twin brother even joined him.
    • Kostas has now returned in "Adults React to #SaltBae Meme Compilation (Oddly Satisfying Salt Bae Videos)"
    • Jade, one of the original Teens and the first to give an on-air farewell, returned in "Adults React to Paramore", three years after her original departure from "React".
    • Marlhy returns as a member of Teens during the Male Rompers episode after last appearing in "Kids React to Mario vs. Minecraft" two years earlier.
    • After appearing on "Kids React to Tamagotchi", Krischelle disappears for two years before returning in "Kids React to In a Heartbeat" now as a teenager (she eventually graduated to Teens the following year).
    • Cooper reappears during the 49th "Try to Watch This Without Laughing or Grinning Challenge" after last appearing in "Kids React to Frozen Fever" two years earlier.
    • Jake Lahs, one of the original [Kids] reactors who left the series late in 2013, returned exactly four years later now as a member of Teens React during the DACA episode.
    • Austin, an original Teens cast member who only appeared in the inaugural episode, returns in early 2018 as a member of the Adults cast.
    • Dash returns in early 2018 after a three year absence, just in time for his graduation to Teens only a few months later.
    • Yehuda Fine returns in mid 2018 during "Elders React to IHOP vs. IHOb ROASTS" after a three year absence.
    • Twins Michael & Miracle return as members of the Adults cast in 2019 after a two-year absence.
    • The Fine Brothers themselves have been notably missing since the React World controversy, with the hosting job for the videos being done by various FBE staffers since. However, they started showing up on-screen again individually more than a year later, and eventually appearing together during The Stinger of Elders React to Rammstein.
  • By "No", I Mean "Yes":
    • Shane Dawson having been asked if he did any "Gangnam Style" parodies.
      Shane Dawson: I've never done it... only three times... on all three of my channels.
    • Teens veteran Rachel on the subject of marijuana:
      "I've done it once a month, when I can't sleep... Twice a month tops, but I'm not a stoner... That said, my birthday is on 4/20."
  • Call-Back:
    • Sometimes done with recycled footage, like one case involving Morgan dancing in the studio.
    • Adam making up a story about picking up girls with dubstep ("Teens React to Jacksfilms") earns him the PLAYA overlay a second time, but with an added FAIL.
    • Ian Hecox and Anthony Padilla mention Dylan's infamous "sushi with [his] blood on it" comment from "Kids React to Smosh", which they were memorably disgusted by when they reacted to that episode.
    • Tobuscus and PewDiePie get featured again in gameplay-footage format in "Teens React to Slender".
    • Invoked in "Kids React to Schmoyoho" when Benny asks the kids which past video in the series they'd want to get the Autotune treatment.
    • You couldn't tell without watching the overlays, but Sam and Niko of Corridor Digital appear in "YouTubers React to Boxxy", which came right after "Kids React to Corridor Digital".
    • "Teens React to Epic Rap Battles of History" could be considered one to "Thrift Shop", from the sheer amount of Squee from the bulk of the teens to Ethan admitting that white rappers are growing as a thing.
    • During the bonus clips from "YouTubers React to Coffeeshop Viral Prank", Mystery Guitar Man brings up the Scary Elevator Prank covered on Elders React a while back. (And the man himself originates from the same country!)
    • It took about half a month for Steve Cardynal to go from subject ("Teens React to Wrecking Ball Chatroulette edition") to participant ("YouTubers React to News Bloopers").
    • Ethan James was immediately fixated with Attack on Titan once he saw what it was for himself, much like Lia with Doctor Who.
    • Crosses with Passing the Torch in "Kids React to Hello Kitty", when Emma R officially inherits the "Emma's Words of Wisdom" overlay from Emma Johnson!
    • We now have "Elders React to Epic Rap Battles of History" some time after the teens had one, down to a similar reaction to the "step in my shower" line.
    • "YouTubers React to The Slap" has the most targets-turned-guests to date, with first-timers Olajide "JJ" Olatunji (KSIolajidebt), Amazingphil and danisnotonfire alongside Jesse and Jeana of PrankVsPrank and Jon Cozart of "After Ever After" fame, all featured before on Teens.
    • Gaming with Teens can sometimes bring back the subjects of the previous Let's Play episodes, like Happy Wheels or Slender The Eight Pages.
    • The episode of Lyric Breakdown where the teens interpret Nirvana's Smells Like Teen Spirit is one to the Teens React episode to Nirvana. In fact, Labib mentions he was in that episode when he found out what song it was.
    • They did the Try Not To Laugh challenge again. Complete with returning contenders!
    • There's a threefold version in "YouTubers React to Don't Hug Me I'm Scared 2 (Time)" - not only does it come after the YouTubers reacting to the original, but the Fines bring up the fact that the kids also had their own session with it.
    • After Josh had to be muted to avoid spoilering Attack on Titan, "Teens React to Mockingjay pt 1" turns it into an Overly-Long Gag due to the number of teens aware of that franchise by now. The whole thing actually started with "Teens React to Catching Fire", when Jade gave out numerous spoilers to the film. She even lampshades that she was spoiling.
    • "YouTubers React to Darude - Sandstorm" has Tom Syndicate saying it's "way better than the tentacle porn one", which is most certainly "DyE - Fantasy".
      • Speaking of which, the one with "ME!ME!ME!" also reminded the YouTubers of "Fantasy".
    • The first episode of React to That reuses Marquese's "Pumped Up Kicks" video from early in Kids React!
    • Chelsea wears the same flannel shirt she wore on her debut during her final Teens episode before graduating to Adults.
    • Sydney graduated off-screen from Teens to Adults in "College Kids React To Top 10 Viral TikToks of 2019: Pet & Animal Videos" but gave her post-graduation speech in the latter. The same thing happened when she graduated off-screen from Kids to Teens in "TEENS REACT TO MEAN GIRLS (10th Anniversary)".
  • Catchphrase:
    • Lia's "creeper" and Morgan's "Follow me, camera!" There's also Eric's "Swag". Another one for Lia is "I think [it's/(s)he's/they're] awesome!"
    • Lia did stop using "creeper" after, of all things, "Kids React to Minecraft", but she finally said it again in the Teens and Elders React crossover episode, "Teens/Elders React to Election 2012".
    • Invoked one time with Morgan (ignoring her no-longer-used, "Follow me, camera!" catchphrase). She yells out "Pig supreme!" when reacting to the Rebecca Black video ("It was like "pig supreme". It's a dessert with a pig on top"), which would fit all the requirements of a catchphrase apart from her using it only one other time. (In the same filming session, but shown in a different video, she shouts, "Very fantastic. Pig Supreme," when reacting to Talking Twin Babies.)
    • In Elders React, Richard's "Kind of leaves you speechless, doesn't it."
  • Cat Smile: Tom has a slight one.
  • Celebrity Resemblance:
    • Half the comments on "Elders React to the Scary Elevator Prank" are about how Yehuda Fine (the Fine Brothers' father!) looks like Steve Jobs if he were alive today.
    • Rachel has a passing resemblance to Sibel Kekilli. It finally pays-off during "Teens React to Game of Thrones" in which Rachel remarks that Tyrion Lannister is her favorite character. Unsurprisingly, one of the most liked comment in that video is from someone saying that "she looks like Shae."
    • A lot of fans in the comments section frequently brings up that Olivia looks like Katherine Langford, the main star of 13 Reasons Why.
    • A lot of fans in the comments section frequently brings up that Mikaela looks like Victoria Justice.
    • A lot of fans in the comments section frequently brings up that Jackson looks like Harry Styles. Appropriately enough, Jackson made his debut during "Kids React to One Direction - Drag Me Down".
    • The flip-side happens during the "Try Not To Laugh or Grin Challenge" featuring the WWE superstars when a few of them have commented that one guy in the video they were watching looks a lot like their colleague Dean Ambrose.
    • During the second "Try Not To Feel Old Challenge", the original Madison compares herself to Pamela Anderson.
    • During "Adults React to Marina Diamandis", Dionte mentions that the singer reminds him of fellow reactor Sheila (the scene then follows with Sheila fangirling over the singer).
  • Chekhov's Gunman:
    • Majority of the YouTubers cast were covered by the Kids, Teens, and even the Elders long before their proper debut on the show. Some were even covered before the creation of YouTubers React.
    • Jourdan frequently brings up his twin brother during his stint on Teens. By the time he returns to the series as part of the Adults cast, said twin brother, Jeremy, shows up with him as a reactor himself.
    • An off-screen example. Benny Fine reveals that he met Sabrina D. during the series' first VidCon event, five or six years before the latter joins the Teens React cast.
  • Chewing the Scenery: Quite a number of reactors are very theatrical.
  • Cloudcuckoolander: Morgan, every now and then. Justified since she's five years old at the beginning of the series. In recent days she's been growing out of that, or at least she's better at expressing it... along with some Hidden Depths.
    • Dylan also started out as being a bit of this, but then later he started showing his own hidden depths... and started wearing glasses.
    • Royel and Emma R. are often this as well, and they're both about the same age at nine years old. Sadly Emma's been growing out of it, but Maksim (who's ten now!) is a serious contender.
    Maksim: "I wish my parents were witches and wizards, then I can do everything I want."
    Maksim: "Does that mean they're a gate? Or the Golden Gay Bridge?"
    Maksim: "If I got a box of microscopes, would I be gay?" (After being explained that "gay" used to mean "happy")
    Maksim(Explaining the problems of some states not recognizing same-sex marriage): "Some people wanna live in one state, and... and they wanna get married... and they just move to the other state, but I'm afraid there's tornadoes... I don't wanna go there, but I have to, because I wanna marry someone I like, that's not right."
    • Some of the elders are this when they get into things, especially Diane. Newcomer Laura can seem a bit... out of touch at times, then in "Elders React to Grand Theft Auto" she suddenly expressed a (disturbing) interest in illegal activity. Oooookay.
  • Color-Coded Characters: The shows' thumbnails on YouTube; a yellow background for Kids, cyan for Teens, grey for Elders, turquoise for Adults, and fittingly, red for YouTubers.note  This one's actually consistent across all Fine Bros' works (blue for Spoilers, pink for Last Moments of Relationships, black for Emo Dad and purple for MyMusic.)
    • The React channel takes this a little further, with the Gaming videos getting a pixelated version of whichever background that group (Kids, Teens and Elders) normally gets, and Kids vs Food has the usual yellow back but with a brick pattern. Opinions throws in a new green one, but Advice has the same purple one as My Music despite changing the pattern. Try Not to Laugh or Smile Challenge is blue, and Challenge Chalice (with few exceptions) is orange.
  • Comedic Sociopathy:
    • "Elders React to the Scary Elevator Prank". Thanks to the trick being revealed early, the bulk of the reactions was basically the elders laughing their heads off at the poor victims.
    • Of course, there are other instances of these reactions on the other React series, such as the YouTubers laughing at the German man jumping and falling on the frozen pool.
    • All over the place in "Elders React to Men Giving Birth". Yes, even from the males.
    • Also in "Kids React to Scott Sterling". It's staged, but still.
    • Most Gaming episodes are either horror-themed or Nintendo Hard (if not downright Platform Hell!), so FBE certainly knows it's hilarious to see the Teens\Adults suffer.
    • Occurs in some of the People vs. Food episodes, such as the Teens being given crickets to eat, or the challenges with spicy food (taken to extremes as the Adults try the five minute Toe of Satan challenge).
    • The Poker Face challenge has three parts of this by whoever gets the shortest straw. In one episode in particular, there's eating a spider, Feather Boa Constrictor (or as summed up by Tori, "I had a snake on my neck!"), and watching an infamous NBA clip of a broken ankle.
  • Comically Missing the Point: You expect one of the elders (Vera) to miss that every video is available online, but one of the teens (Jeannie)?
    • Don apparently missed the whole "satire" thing with The Lonely Island.
    • In one Kids React video, Jake figures out that the Fine Brothers are actually brothers.
    • Two of the YouTubers dig instead at the vertical video during "YouTubers React to Viral Gift Videos".
    • In "Elders React to The Interview", Hanoch points out that the Russian tank in the movie is actually American.
    • In "Teens vs. Food: Guess That Pizza Challenge", despite being told that they'll be trying different delivery franchise pizzas, Jayka guesses Chuck E. Cheese (which doesn't deliver) for one slice, Alberto says DiGiorno, then later he and Kaelyn both say Costco, the former being a grocery store bought brand and the other being exclusive to, of course, the afformentioned Costco. The DiGiorno is particularly facepalm-worthy, given that their slogan is "It's not delivery, it's DiGiorno".
  • Coming of Age Story: This is more notable with reactors who grew up on the show.
  • Commuting on a Bus: Inevitable as the show has a very large cast, not to mention each of the said cast having their own personal schedules that determine their availability. It's even more obvious in the case of Teens or/and College Kids who decide to attend college far from Los Angeles and appear less and less (such as Sabrina in Stanford, Jeordy in England and Rachel in San Diego).
  • Compilation Series:
    • A television spin-off, React to That, premiered on Nickelodeon on December 15, 2014, as a 12-episode seriesnote  that aired five day a week until New Year's Day 2015. React to That was formatted differently from the web series: while it features Reactors and celebrities watching numerous viral videos, they also take part in various challenges related to those videos. The show was cancelled by Nick after only one season.
    • In November 2017, digital multicast network TBD – which focuses on online content – began airing three half-hour series comprising episodes of the React series and related segments from the Fine Brothers' other YouTube channels: FBE: Reactnote , FBE: React Gamingnote  and FBE: Try Againnote . The segments featured in each series are edited for profanity or, where applicable, for length due to the TBD series' half-hour time constraints.
  • Computer Equals Monitor: Invoked in "Kids React to Old Computers" - pretty much all the kids found the monitor switch and expected that to start the old rig up. It wasn't quite like that back then. Also happened in "Teens React to Windows 95", with computers from a decade later but the "test subjects" still only turning on the monitor.
  • Crossover:
    • When the kids encounter Epic Meal Time.
    • There is also the first (and so far, only) cross-generational React episode in "Teens/Elders React to Election 2012". Kids React had a separate, individual episode, though their reactions were mentioned to both the teens and the elders. This episode would later be the foundation for Generations React, which itself is a crossover series for React as a whole.
    • William and Dylan in "Jedi A-holes Strike Back" by Freddie Wong, who returns the favor by appearing in YouTubers React episode 2.
  • Cuteness Proximity: Paris is practically Squeeing over the Dragon Baby video.
  • The Cutie: Most Kids. And quite a few female Teens, even if they have some less than wholesome interests (just see Chelsea's adorable Squeeing over... The Walking Dead).
  • Dawn of an Era:
    • Season 2 (2011) was the period when the series started gaining prominence, culminating with the launch of Teens.
    • Season 3 (2012) was the last year for several first season reactors (more on that below), but it was also the year when Elders and YouTubers were launched. This was also the year where majority of the series' most prominent reactors made their debut. It helps that this was the year where the show got its Emmy win.
    • Season 5 (2014) saw the launch of the "Advice", "Gaming", "Lyric Breakdown", "Opinions" and "People vs. Food" episodes. This time was also where majority of the Kids cast from the first two seasons have moved to Teens. Many prominent reactors also debuted during this time.
    • Season 6 (2015), while also an End of an Age (more on that below), saw the launch of Adults and both the "Try Not To..." and "Do They Know It?" challenges. This time was also where nearly all of the original Kids cast have moved to Teens.
    • Season 8 (2017) was the first year to feature Kids cast who were as old as the series (as in born during the year the show's inaugural season aired). Majority of the prominent Teens cast have also graduated to Adults by this time, and it was when both "Challenge Chalice" and the "Guess That Song" episodes were launched. To date it was also the year with the most comebacks of departed cast members. Most notably it saw the creation of the community team and the relaunch of FBE2 in order to show more behind-the-scenes elements of the company.
    • Season 9 (2018) was the first year to feature a reactor to transition from Kids to Teens to Adults.
    • Season 11 (2020) is the first year to feature Adults reactors who were born during the Turn of the Millennium.
  • Deadpan Snarker: Plenty of the older kids fall into this, mostly Jake and William. Out of the teens, Rumor, Tom, Adam, Alix, and most definitely Eric have their moments. YouTubers React takes this up to eleven of course, and the elders are naturally in a class of their own.
    Benny Fine: "Do you want to get married one day?"
    Adam: "Yes. (Beat) I couldn't think of anything smartass to say."
    • Former teen Morgan is a great example, even if emphasizing snark over deadpan as time went on. For instance, reacting to herself:
    2014 Morgan: If high school dances were like this, I would want to go.
    Present Morgan: No you wouldn't! Bitch, you were lying on the couch reading Twilight for the tenth time that year! Liar! Why you're lying?!
  • Department of Redundancy Department: The title of the "Reactption" episodes (e.g. "College Kids React to Themselves on Teens React" or "Teens React to Linkin Park Reacts to Teens React to Linkin Park").
  • Disney Owns This Trope: The announcement that the Fine Brothers would trademark and license "React" series did not go over well on the Internet.
  • Don't Try This at Home: The Fine Brothers put up this warning for "Kids React to Cinnamon Challenge", "Elders React to Challenges (Cinnamon, Salt & Ice, and Milk Chug)", and "YouTubers React to Knife Game Song", and for good reason, too.
    Jake Short: "All of the stuff in this video was attempted by non-professionals, so don't try this at home. Try it at your friend's house."
    • With "Elders React To Eyeball Licking", the Fine Brothers didn't out and out say this as they did with the other ones, but they did show all the health risks it involves, plus the phrase "if you don't want any of the 650+ diseases you can get from this, don't do it", and also highlighted the elders pointing out how stupid the idea is.
  • Dirty Old Man:
    • Not really, but a few of the male elders had no particular qualms in commenting on the attractiveness of certain young females in the videos.
    • Boy, were the YouTubers disturbed when Benny mentioned that Magibon's most popular demographic were men 45 and older.
    • Downright exploited when the Elders were challenged to watch Cardi B's "Twerk" on a loop (although there were women... who didn't last as long as the men).
  • Dramatically Missing the Point:
    • In "Kids React to Controversial Cheerios Commercial", none of the kids knew what the internet uproar was about until Benny explicity pointed it out.
    • Mike "Husky" Lamond in "YouTubers React to Look Up" is so pro-technology compared to everyone else in the episode (even those who were also pro-tech), and so oblivious to the message of not using your personal devices so much and to communicate more without them, that the shown video's idea of selling one's computer for a ring appalls him. To be specific, he doesn't like the idea that someone would get rid of a computer to get for someone else what is normally considered in Western society as a symbol of engagement or marriage, because a ring "does absolutely nothing for you unless it's a magical ring and a computer does everything for you and it's not magical".
  • Eagleland/Testosterone Poisoning: The "BAD ASS" overlay involves camo patterns, warpaint, bullet holes, a bandolier with throwing knives and to top it off, a bald eagle carrying a machine gun.
    • Invoked (with the latter trope) during "Teens React to FPSRussia", of course.
    Adam: "It's too awesome for words, maybe short grunt noises like UUHHH!! UURRRHH!!1"
  • End of an Age:
    • Season 3 (2012) was the last year for several first season reactors, namely Emma, Sammie, Athena, and William.
    • Season 4 (2013) was the last year Kids React featured kids who were born in The '90s.
    • Season 6 (2015) is this for the entire series, for major reasons.
      • It was the last year that a Kids React episode featured any of the inaugural cast or those who debuted in the first season on it.note  Another note 
      • It was also the last year that The Fine Brothers themselves did the regular hosting for the shows.
      • And it was the last year for several long-time and prominent reactors (at least for a while), such as the original Morgan (see first note), Riley, the male Shannon, and most notably Lia.note 
    • The period between late 2014-2017 (specifically the very end of Season 5 to Season 8) saw several of both inaugural and prominent cast members of Teens either leave the series altogether or graduate to Adults. "Teens React to Green Day" in particular features Ethan, the last remaining member of the inaugural Teens cast, do the latter. Several of the departed teens did eventually return for Adults, however.
    • The period of 2017-2018 is where most of the second generation Kids cast started graduating to Teens.
    • Season 10 (2019) was the last year Teens React featured teens who were born in The '90s.
  • Epic Fail:
    • Spoken by Royel of all kids when reacting to a One Direction music video.
    • Whenever Chelsea plays video games, it tends to end badly.
    • The second "Try To Watch This Without Laughing Or Grinning" challenge. Laina aka the Overly Attached Girlfriend lasts about five seconds.
  • Event Title: The series is about people reacting to something or someone.
  • Expy: Royel unintentionally appears like Buckwheat, just with a fluffy afro.
  • Eye Take:
  • Facepalm: Done occasionally. Also in headdesk variant!
  • Fanboy:
  • Fiery Redhead:
    • Twins Megan and Shannon usually find themselves squabbling, especially during their earlier years.
    • Jeordy is always passionate about her opinions.
    • The younger Sydney is a very expressive person and always appears hyped.
  • Flat "What": When Ethan was told that some people think Nicki Minaj's song Anaconda was feminist.
  • Forced to Watch: The whole purpose of the "Try Not To Look Away" challenges.
  • Four-Temperament Ensemble: The second "Try To Watch This Without Laughing Or Grinning" Challenge with the WWE superstars features four female wrestlers who acted accordingly: Becky Lynch (somehow) stayed in her character as a Heel/Anti-Hero all throughout the challenge and acted smug (Choleric); Alexa Bliss is the most cheerful and people-oriented of the bunch, even sharing some of her own experiences to the audience (Sanguine); Alicia Fox is the most focused and Genre Savvy of the bunch due to also being part of the previous challenge with the WWE Superstars (Melancholic); and Mickie James is mostly laid-back (Phlegmatic).
  • Freeze-Frame Bonus: Invoked in this special announcement, where the newest additions to YouTubers React were subtly revealed in this fashion. Grace Helbig was revealed this way.
  • Fun T-Shirt: Several from the teens, YouTubers and even elders.
  • Gay Aesop: The topic is mostly discussed in Kids, specifically in the episodes regarding gay marriage, its ruling, and In a Heartbeat. The episode on the former has all the kids, bar one, telling gay people that they shouldn't need to be afraid about being gay. However, the Elders also reacted to the last one.
  • Gender-Blender Name:
    • The black chick on Teens is named Kennedy, and a blonde girl in Kids is named Cooper.
    • The names "Alex", "Jordan", "Shannon", and "Cooper" (see above) have all been used by reactors of both genders.
  • The Generation Gap: All over the place, such as the kids dismissing old technology\habits. It is particularly noticeable when more than one cast covers the same topic.
  • Genki Girl:
    • The original Morgan was frequently giddying during her early years in the show. She matures significantly by her fourth year.
    • Justine Ezarik can not sit still.
    • Rae from Teens is probably more hyper than half of the kids put together.
  • Genre Blind: In spite of the many examples of Genre Savvy throughout all the shows, a few examples crop up every now and then.
    • Literally none of the YouTubers expected that they would be the victims of a Rickroll. When the Fine Brothers offered to show them some news footage related to it, literally only three people worked out it was going to happen again, and of those three two of them were a double act. Lampshaded by Jack Douglass, who commented "Should have seen that coming!"
  • Genre Savvy: There are many examples, and generally anyone who's on the show becomes this if they aren't already.
    • Yehuda is the first one to be suspicious of the mirrors in the elevator. Rock apparently anticipated the direction the video would take when the first male victim appeared.
    • Quite a few guys predicted the screaming goat in YouTubers React #6. Similarly, Smosh even mentions Rule of Three for the Knife Game one.
    • Kurt Schneider was the only person to predict that Don't Hug Me, I'm Scared was going to suddenly get disturbing, even timing his guess as to when it was going to happen and getting it exactly right.
    • This gem from "Teens React to The Fox":
    Tom: "It's funny, 'cause I just seen these guys on Ellen, the talk show and... I knew that was one of your questions I just knew it!"
    • During "Teens React to Game of Thrones", Mikaela was the only non-watcher to immediately correctly deduce that Joffrey Baratheon is a despicable villainous character.
    • "YouTubers React to the Farting Preacher". Phillip DeFranco was the first to assume Pastor Tilton met some kind of Laser-Guided Karma eventually, as well as predicting the "fart version" of the whole episode whether they consented or not.
    • Yehuda returns for "Elders React to Oculus Rift", and is the first to predict a rollercoaster!
    • Similarly, Adande predicts the Fines bringing out an actual rope in "YouTubers React to Ylvis - Trucker's Hitch".
    • Labib eventually figures out that Sonic.exe was a Creepypasta game. His first guess wasn't too far off (He said it was some Illuminati game).
    • In the Elders Play The Last of Us, both Catherine and Anne know right away from the dialogue that the soldier is going to kill Joel and Sarah.
    • In Elders Play Grand Theft Auto V Catherine gets a nice quip in;
      Catherine: "That's his wife or his girlfriend? [Amanda drinks a cocktail.] Who's an alcoholic?"
      Amanda: "Six more of these and I'll be comatose enough to sleep with you."
      Catherine: "It's his wife."
    • In episodes featuring the reactors reacting to the reaction of the person involved in the video they previously reacted to, some (specifically the younger Sidney in "Kids React to Poppy Reacts to Kids React to Poppy", and Tori in "Teens React to Linkin Park Reacts to Teens React to Linkin Park") have correctly guessed who that particular person is based solely from the host's introduction.
  • Gone Horribly Wrong: The huge backlash against their announcement that they would trademark and license "React" series resulted in them losing a chunk of their subscribers. They later apologized and dropped the plans altogether but the damage had already been done.
  • Gosh Darn It to Heck!: Even if cuss words are bleeped, the cast certainly knows how to employ this.
    • Troy, misunderstanding the lyrics of Psy's "Gentleman" ("I�m a, mother-father-gentleman")
    Troy: "I'm a... mother-truckin' something."
  • Graduate from the Story: From Kids React (at age 14, upon entering high school) and then from Teens React (upon reaching age 19, then later extended to 20, after graduating from high school). From there, it's on to either or Adults React for those from 20-55, then Elders React for those who are 55 and up. College Kids React serves as a bridge between Teens and Adults, as the age range of the cast (18-22) overlaps with that of the tail end of the age range for Teens and the beginning range for Adults; as such, cast members appear on one of the latter two depending on their age at the time they begin appearing on College Kids.
    • Lia pioneered the graduation from Kids to Teens. Alex, Brooke-Monae, Bryson, Caden, Chloe, Claudia, Darius, Dash, Derek, Dylan, Elle, Emma R., Everhet, Jackson, Jacob, Jair, Jake, Janelle, Jaxon, Jayka, Kacey, Krischelle, Lydon, Marlhy, Megan & Shannon, Mikaela, Morgan A., Olivia, Riley, Royel, Seth, Sydney, Thomas, Troy, Tyler and Tyler F. have since followed in her footsteps.
      • Lia skipped the Teens age limit and, starting with "YouTubers React to News Bloopers 2013" at the age of 17, became the first person to go from Kids to Teens to YouTubers.
      • Seth was the first person to make the transition from Kids to Teens to Adults. Darius, Mikaela, Royel, Sydney, and Troy have since followed in his footsteps.
      • Mikaela is the only cast member (so far) to appear in Kids, Teens, Adults and Staff.
      • Jaxon was the first Kids graduate to return to the show for an episode.
    • Lucas Cruikshank is an odd celebrity example. He was 18 when he made a one-off guest spot on Teens React. The next time he's seen on a React series, he's 20 and appearing on YouTubers React with Jennifer Veal.
    • Ethan James, Jeannie and Madison were the first Teens React alumni to jump to Adults React. Since then, they have been joined by Adam, Alberto, Alicia, Alix, Anna, Austin, Brianna, Brooklin, Carlos, Chelsea, Daniel, Darius, Eric, Ethan, Evelyn, Gavin, Geneva, Jade, Jasser, Jeordy, Jillian, Jourdan (now with his twin brother Jeremy), Kaelyn, Kennedy, Kenneth, Kostas, Labib, Leah, Leyla, Luis, Michael & Miracle, Mikaela, Moises, Morgan, Noah, Nora, Rachel, Rae, Reina, Sabrina, Sabrina D., Sam, Sergio, Seth, Shant, Sophia, the older and original Sydney, the second and younger Sydney, Talia, Tom, Tori, Troy, and Will.
      • Brooklin, Eric, Mikaela, Tom, Tori and Rachel have also appeared in Staff episodes due to also working for production as part of the FBE Community team, making them the only reactors to go from Teens to Adults to Staff. In Rachel's case she moved to the Staff cast permanently since unlike the others mentioned, she became a full-time staff member in late 2018.
    • Brandon, Brooklin, Eric, Mikaela, Tom, Tori and Rachel were (so far) the only Adults cast to concurrently appear in the Staff episodes, again, due to being part of the FBE Community team (sans Rachel, who ends up being an full fledged FBE staffer instead of being part of the community team).
    • Special mention goes to Jade and Austin. The former was the first teen to formally graduate from Teens React, but did so before the creation of Adults React (She would appear on Adults React after a lengthy absence from the series), while the latter only appeared in the very first Teens React episode before resurfacing as a member of the Adults cast six-and-a-half years later.
    • Similar to Austin above, both Marlhy and Jake disappeared for a few years before their official graduation (e.g reaching the age limit of fourteen) from Kids, only to resurface as members of the Teens cast.
  • Grammar Nazi:
    Athena: "What is wrong with her!? She can't even speak proper English!
    Kennedy: "My biggest pet peeve is when people don't use proper grammar. I just want to explode. It just- it just bothers me so much."
  • Hair of Gold, Heart of Gold: Lia is definitely one of the nicer people in the series.
  • Head Desk: When Adam finds out that a large number of teenage boys and grown men like My Little Pony.
  • Hidden Depths:
    • As mentioned above, Morgan and Dylan from Kids.
      • Emma R may have raised a few gamer eyebrows when she somehow 'got' the concept of level editors (re. Super Meat Boy).
      "I got a question - Are all these levels makeable?"
    • Adam, Rumor and Jade from Teens. The girls in particular may seem like unabashed Valley Girls, but Rumor can rattle off all the character names in Mean Girls, while Jade can name every Jennifer Lawrence role, which is not easy.
  • Huge Schoolgirl:
    • Mikaela's always looked somewhat out of place during her time on Kids React for this reason. During the Gaming with Teens head-to-head session, she's actually taller than Josh, who should be older than her.
    • Lia. At first it's justified as she's the oldest of the inaugural Kids cast. However, she's still visibly one of the tallest girls in Teens during her time there.
    • Lydon, who by her third year didn't look at all as still a Kid (and she was still two years away from turning 14 and graduating!).
  • Hypocritical Humor:
    • Jayka issuing death threats in "Kids React to Harlem Shake" when she was the one laughing the hardest.
    • Steve Kardynal remarking on the audacity of photobombers in "YouTubers React to News Bloopers". This is a guy known for swinging naked on a yoga ball, folks.
  • Iconic Sequel Character: The series has had several reactors through the years, so any prominent reactor introduced starting its second season counts.
    • For easier context, the only prominent reactors who have been in the series during the first season are/were Lia, Dylan, Morgan, Elle, the twins Megan and Shannon, Emma, Athena, Jake, William, and Sammie (and of those eleven, only Lia, Dylan, Morgan, Jake, Emma, and Sammie were in the Pilot).note 
    • Further, the original cast of Teens (minus those who graduated from Kids, obviously) were introduced near the end of the second season. The original cast of both Elders and YouTubers (minus eventually Lianote ) were introduced during the third season. And the original cast of Adults (minus those who graduated from Teens) were introduced during the sixth season.
  • Identical Stranger:
    • Going by the YouTube comments, Shant and Ethan James (despite the former having less hair and more muscle).
    • Mikaela mentions that people have often mistaken her and Tori for each other (despite the former being notably much taller and the latter frequently having dyed strands in her hair).
    • Tyler F. and Jackson (even if the latter has longer hair), if all the misnamings when Tyler plays in FBE's Twitch are an indication.
  • Identical Twin ID Tag:
    • Megan and Shannon just part their hair differently, though in "Kids React to Election 2012" they have identical hair but different colored outfits. After they moved to Teens React, one of the twins would wear glasses on occasion (Shannon at first, now Megan).
    • There's also Kelli and Alisyn from the Adults side (yes, adults) who were virtually identical from the neck up, but nowadays, Alisyn generally has shorter hair.
  • Idiosyncratic Episode Naming: "[Age group or YouTubers] React to [Topic]"
  • I Hate Past Me: Whenever Teens\Adults have to react to themselves (either videos as Kids\Teens or their auditions), expect a lot of this.
  • I'm a Humanitarian:
    • Dylan (in)famously invoked this during "Kids React to Smosh", saying he will "eat a sushi with his blood on it".
    • During the raw meat episode of College Kids vs. Food, the reactors were tricked that they just ate human meat. They were not amused.
  • Innocently Insensitive: It's Lia, so it may well count as this:
    Benny Fine: "Which specific ex-boyfriend do you think "We are Never Ever Ever Getting Back Together" was about?"
    Lia: "Oh my god, I can't name them all!"
    • And during the exclusive "Kids React to Vidcon":
    Benny Fine: "What kind of people do you think go to Vidcon?"
    Darius: "People who don't have a job."
    Everhet: "People who have no life and are covered in acne."
    • Dylan going "he's too old to have that kind of girls" in response to One Pound Fish. The guy's only 31!
    • However, Dylan scores some points for knowing what Harlem is ("Kids React to the Harlem Shake"), while Everhet thought it was "a prison or a very bad neighborhood".
    • Jeannie from Teens has been afflicted with foot-in-mouth disease for quite a while now.
    "He's like a... nice child molester?"
    • Claudia may have earned a medal for this by now - first off, in the one with a film-using camera:
    Benny: "So it used to be, you had no idea how the pictures turned out, until you brought them to a store... and waited one hour for the film to be developed..."
    Claudia: "I feel bad for those people."
    Rafi: "...Us."
    Claudia: "Oh, I'm sorry."
    • And in a later ep, when Benny says Power Rangers has been around for more than 20 years and that he and Rafi watched it when they were kids.
    Claudia: I didn't realize it was that old. I thought...
    Claudia: *while laughing* I'm sorry!
    • Jenna made epic ones during Kids React to the first iPod.
      Benny: What you have there is the very first model of iPod ever made, and it was made from Apple 2001.
      [The other kids giving their reactions]
      Jenna: I think that's when dinosaurs lived.
      Benny: We were all alive then!
      Jenna: Oh. Were my mom and dad?
      Benny: Yeah!
      [Benny addresses to the kids how their reactions to older trends and technologies are oftentimes upsetting to adult, young adult, and even older teenaged viewers]
      Jenna: You think I'm calling them old. Sorry! I didn't know... [Beat] that you were alive!
      [Cue "Aww... Cute!" overlay]
  • Ironic Episode Title: The "Try Not To..." challenges are about suppressing emotions, contradicting the very word that the series was named after.
  • It's the Best Whatever, Ever!:
  • Jaw Drop: Kostas in "Teens React to Facebook Parenting".
    • Adam has two in the Amanda Todd episode, out of shock for what happened to her. Madison also has one in the same episode.
    • A beautiful one from Don in "Elders React to Happy Tree Friends".
    • Paris and Morgan in "Golden Eagle Snatches Kid".
    • A perfect one from Lia when she finds out who originally did the cup song in "Teens React to the Cup Song".
    • Diane while watching the Jersey Shore cast get violent.
    • Royel in "Kids React to Going To The Store". And then he resets it manually.
    • Barbara in "Elders React to A Million Ways to Die in the West".
  • Job Title: YouTubers React feature several YouTube personalities, while the Staff React episodes feature the FBE behind the scenes personnel. College Kids React feature both Adults and Teens cast who are going to college.
  • Justified Title: While the series has always been about getting Reaction Shots, it was mainly for opinions. The series eventually branched out to other topics still having to deal with reaction such as the Let's Play episodes and the "Try Not To..." challenges.
  • Kayfabe: True to form, when wrestlers (particularly WWE superstars) are invited for episodes, expect at least one to appear in his/her current character. Notable examples were Chris Jericho, Lana, Becky Lynch, and The New Day members Kofi Kingston and Big E..
  • Last Episode, New Character: Played With. "Kids React to YouTube Stars (The Annoying Orange, Fred and iJustine)" was released after Elle and twins Megan and Shannon's debut episode "Kids React To Viral Videos # 5 (Charlie Bit My Finger, Golden Voice Homeless Man, Double Dream Hands)", but was officially listed as the inaugural Season Finale while the latter was instead listed as the second episode of Season 2. This also (technically) applies to the latter two of the eponymous YouTube Stars Lucas Cruikshank and Justine Ezarik, who would eventually become regular cast members of YouTubers React years later.
  • Long-Runner Cast Turnover:
    • The series has been around since 2010. Since then, it has grown and cast members either graduate to another show or leave the show (altogether or for a time).
    • Adults has the largest gap between starting at age 20 (in many cases after graduating from Teens) to graduating to Elders at 55.
  • Medium Awareness:
    Mystery Guitar Man: "I think it's a brilliant thing to get a bunch of YouTube stars to be in one specif- Wait a second! WAIT A SECOND! I know what this is! I know - you guys are using me!" (leaves in a mock hissy fit)
    • "YouTubers React to the Farting Preacher". Half of the guests actually sensed that the fart sounds were being added to the episode "right now" rather than in post-production.
    • A rare one from one of the kids in "Kids React to ALS Ice Bucket Challenge".
    Emma R: And now of course it's, QUESTION TIME! (Beat as we hear the Fines laughing) I've been here long enough to know everything!
    • Barbara has always proven rather Genre Savvy, until this moment in "Elders React to First Moon Party":
    "I was in school, and I was like "I got it mom!", "Well come here, let's take care of it!" (Beat) Oh gosh this is going on the internet..."
  • Mic Drop: When Mikaela, Seth and Rae are doing a Let's Play of Life Is Strange, Rae ignores their prompting to look for clues about a combination lock's solution in the fourth chapter of the game and inputs it from her memory of finding it in the first chapter (which was literally one of about ten clues they found then, and filmed nearly a month earlier). When it works she drops the controller and tosses her hands up in a victory salute, while Mikaela and Seth look on in disbelief. She does laughingly note a minute later that she didn't think she'd get it right.
  • Mood Whiplash:
    • What follows "Teens React to Bullying (Amanda Todd)"? "Kids React to 'It's Thanksgiving' (Nicole Westbrook)".
    • Near the end of the latter episode, Morgan went from being calm and polite to mad and argumentative upon hearing that a lot of people dislike the song just for the heck of it. Note that Morgan was one of only a couple kids who likes this song and was very defensive of it.
    Benny Fine: So many people are so mean about this video, but you're so nice about it.
    Morgan: Thank you.
    Rafi Fine: So many people seem to find it fun to not like videos.
    Morgan: That is bad! Bad! Just don't even give it thumbs down, just say you hate it, but don't show it!
    • There's several cases of conflicting views lined up together.
    • "Elders React to 50 Shades of Grey Trailer" drops a MASSIVE one at the end, abruptly cutting to black immediately after giving one of the elderly women the "PLAYA!" overlay, and solemnly dedicating the video to one of the elders who had passed away that week.
    • During Chelsea and Brooklin's Let's Play of Little Nightmares, they didn't discover the "hugging a Nome" mechanic until Chapter 4. They squee about how cute it is and joke that they want to adopt Six, then later simultaneously "d'awww" when a Nome offers the starving Six a sausage. And then Six ignores the sausage in favor of killing and feeding on the Nome.
    Chelsea: See, you show people love, and they pay with love in return.
    Little Nightmares: *Six staggers toward the Nome*
    Brooklin: Just eat it. He — he is offering you something.
    Chelsea: Eat it, honey.
    Brooklin: Eat it.
    Little Nightmares: *Six pounces on the Nome and begins eating it alive*
    Brooklin: *horrified gasp* No! No! *drops controller* I didn't do it! I didn't do it!
    Brooklin & Chelsea: *stare in shock with hands over their mouths*
  • Mr. Fanservice: Tom, Labib, the original Jake, Shant, Ethan James, Kostas, and Eric are all very nice to look at and will occasionally turn up in vests or very short sleeved t-shirts. 90% of the comments on the Outlast series draw attention to Tom's good-looks.
  • Ms. Fanservice: The series has had many beautiful reactors through the years (even inspiring their own sub-Reddit, which for obvious reasons has a tough stance on comments), but the ones who occasionally turn up in revealing clothes (e.g shirts that are sleeveless, with plunging necklines, or/and just plainly tight) and are generally appealing/popular to the male (and even female) fanbase are/were Alix, Becca, Blair Fowler, Brittany, Haley, Izzy, Jaykanote , the second female Jordan, Kaelyn, Lia, the older and original Madison, Marlhy, Mikaela, the third and oldest Morgan, Rachel, Riley, Sabrina D., Sophia, the older and original Sydney, Tori, and Justine Ezarik.
  • Mundane Made Awesome:
    • YouTubersReact has the most dramatic background music, as if the Fine Bros are trying to tell us that watching YouTubers watching and reacting to other YouTube videos is awesome.
    • Teens React to 90s Handheld Games. Clearing a round of Bo Jackson Football leads to a couple of touchdown celebrations.
  • Mythology Gag: Dash regarding one cat video as "quality internet video", referencing the Fine bros' "Spoilers" series.
  • Nightmare Fetishist:
    • Adam reacts to Slender: The Eight Pages with glee.
    • Rachel takes to Five Nights at Freddy's rather enthusiastically and later on when she's playing Sonic.exe, she wonders why she's enjoying the stage she's on suddenly having blood all over.
    • Royel is gleefully singing along with the Don't Hug me, I'm Scared video and is frequently ecstatic with normally scary things.
  • Non-Appearing Title: Both "Mötley Crüe Reacts to Kids React to Mötley Crüe" and "Linkin Park Reacts to Teens React to Linkin Park" do not feature the entire band, but just a single member (Tommy Lee for the former, Mike Shinoda for the latter).
  • Non-Indicative Name:
    • Sometimes the kids are shown a viral video whose name has nothing to do with its subject matter, such as "Going to the Store", "Late For Meeting", or "Don't Hug Me I'm Scared". The brothers will always ask the kids what they think the title of the video is. Cue incredulous reactions such as "That doesn't make any SENSE!!!" when they are told the actual title.
    • Despite the show's title, Teens React doesn't include thirteen year olds.
  • Noodle Incident:
    Maksim: "Once I bited one of my parents, and he had blood."
    • From "Elders React to Murdered My Wisdom Teeth":
    Rock: "I had a back operation... when I came out, I was really in a different place, and I thought I was in Vietnam."
    • In "Teens React to Wrecking Ball (Chatroulette Version)", the teens are asked how they'd react if someone like Steve Kardynal appeared on their screen.
    Madison: "I'd close my computer and be like, 'Ah! No! Not again!'"
  • "Not So Different" Remark: "YouTubers React to Japanese Commercials #2" scores a new first by getting actual Japanese folks to watch them as well. It's no secret that Japanese commercials are outlandish and ridiculous, but one of the Japanese YouTubers points out that there's Western commercials like that - the Terry Crews Old Spice commercials.
  • N-Word Privileges:
    • From Ethan laughing off the idea that he would still be a slave if not for progress and amendments, to Royel just blurting out "is he black?" in response to the One Pound Fish guy (Pakistani, for the record).
    • "Teens React To Jonah Hill Controversy" is a very serious discussion about this trope, mostly regarding slang terms for LGBT.
    • During his reaction to his (Kids) React debut, Seth mockingly says that "he looked so Asian".
  • Older Than They Look:
    • For one, Jake Short returned to Teens React ("Hair Tutorial Gone Wrong") eight months after he first appeared in "Salad Fingers", and he has not aged a day. Same for Will, who looks like he's 9 but is actually Fifteen during his first few years on Teens React!
    • It's also hard to imagine Ethan James reaching 20 and leaving Teens React well ahead of longtime regulars like Tom, Adam, Rumor and Alix, but that's just how it is.
    • Madison barely aged since her debut in the very first Teens React episode back in 2011 when she reacted to it as parts of the Adults cast in 2017. Madison even lampshades that she still sounds the same.
    • The older and original Sydney barely aged when she reacted to her debut on a Teens episode, six years after her said debut on Kids. She even lampshades this during the episode.
  • Once per Episode: Question Time!note 
  • One Degree of Separation: Alix got into the show because her high school teacher notified her (and her classmates) about a Teens React audition. This teacher happens to be Everhet's mom.
  • One-Steve Limit: This page covers it fully in detail.
  • Otaku: Several of the cast are anime lovers. Notable examples are Alix, Becca, Eric, Everhet, Jasser, Josh, Labib, Lydon, and Rae.
  • Pop-Cultural Osmosis: Occurs sometimes with the Kids and Teens. The latter in particular are more prone to Sampled Up (one mistook "Every Breath You Take" for "I'll Be Missing You", another didn't know "Hide and Seek" wasn't something made by Jason De Rulo, and another only knew "Dream On" because Eminem used it in a song).
  • Pop-Cultural Osmosis Failure: On the other hand, this is much more to be expected. A glaring example is during "Do College Kids know 80s Action Movies" episode:
    Jeannie [presented with The Terminator poster] This is Arnold Schwarzenegger. The governor. I don't know this movie, and I didn't know he acted.
  • Precision F-Strike:
    Catherine: "Take a shower, wash your hair, put on some clothes, go out and get a job and leave us the f—k alone."
    • One of the rare meaningful ones from "Teens React to Dumb Ways to Die":
    Kostas: "Big things going really fast are gonna f—k you up, so don't f—k with trains."
    Overlay: "KNOWLEDGE (A public service announcement from Teens React)"
    • We got one from Jordan Maron, aka CaptainSparklez in "YouTubers React to Farting Preacher". Normally, he doesn't use swearwords beyond "crap", or "damn", but upon learning that the farting videos were fake we get this gem.
    Jordan Maron: "I am so fucking gullible!"
  • Product Placement: Friskies sponsored their April Fools' Day 2014 video.
  • Put on a Bus: Some of the React series' old regulars have ended up leaving the show for no apparent reason.
    • The most notorious example was William Sherman of Kids React, arguably the most popular of the kids (even over Lia), whose absence spurred frequent inquiry in the comments section of many Kids React videos and on William's own videos. Eventually, he gave a reason for his departure.
    • Other departed original kids include Athena Stamakinley, Emma Johnson, the latter's sister Sammie, and Morgan Bertsch.
    • Several of the original teens from Teens React have aged out of the show and departed without fanfare, including Devin and Erin. Same goes for other prominent reactors such as Rumor, Rebecca, and Viktor.
    • Diane, a mainstay of the earliest Elders React episodes, suddenly stopped appearing and hasn't returned since. Other Elders who have stopped making appearances include Owen, Marty, Rhoda, Laura, Jon, Darlene, Hanoch (who has harsh words on the subject), Liz, and Yehuda, the Fine Bros' dad.
    • Series Mascot Lia herself has stopped appearing since 2015.
    • When the COVID-19 pandemic hit, Fiona went to live with her parents in Australia. Due to the country locking down its borders during the pandemic, she hasn't been able to return to America, so only time will tell if her bus comes back.
  • The Quiet One: Rafi, probably because he's mainly operating the camera. Benny is usually the one who asks the questions, with Rafi speaking up or laughing along with Benny about a quarter of the time.
  • Rage Quit:
    • A minor version in "Teens React to Happy Wheels", when Rachel goes through three attempts, only to come closer and closer to stopping short of the finish line.
    • Evan's final word on the Skip-It.
    • The FBE Reacts Try Not to Get Mad Challenge had one staffer angrily closing the laptop once a clip of Suicide Squad (2016) was played.
  • Reaction Shot: Well, duh.
  • Reaction Video: Pretty much the entire channel, obviously.
  • Real Life Writes the Plot: "Teens React to Markiplier" comes after the longest reverse period in which a subject turns Youtubers React guest. It's most likely triggered by Mark's appearance on Jimmy Kimmel Live!.
  • Recognition Failure: Kids, Teens and at times College Kids are prone to this during the "Do They Know It?" episodes. The Guess That Song\Movie Challenge also has it, most blatantly when both people don't get it (or worse, they know the song but not either the title or artist).
  • Recurring Character: Lia is the only person to have appeared in three of the different series. (She started on Kids React, grew older and joined Teens React, and due to having her own YouTube channel, got featured on YouTubers React.)
  • Recycled Premise: This page covers it fully in detail.
  • Running Gag: A few.
    • Emma's (and later others') Words of Wisdom.
    • "Aw... CUTE!"
    • There were also three or four instances of Words of Zen.
    • TRUTH!
    • PLAYA!
    • A Teens React-specific one has Eric trying to hook up with the pretty women that he has just seen in the videos by giving out his phone number, only to be censored post-production after the 925 area code to protect his full identity and for privacy reasons. Ironic that he is now a couple with fellow reactor Tori.
    • The screen going Deliberately Monochrome and skewing when one of the folks starts getting scary. This one gets cranked up to eleven with the addition of an Evil Laugh and a pair of steepled hands a la Gendo Ikari.
    • By "Elders React to A Million Ways to Die in the West", Don going "I'm in love" at the sight of any nubile female is becoming one.
    • Many Try not to Get Mad challenges repeat certain clips over and over. And one Try not to Move Challenge played "I'll Be There For You" thrice to see if they would fall for the claps.
    • The "Try Not To Feel Old" Challenges always includes the older and original Madison, much to her chargin.
  • Sassy Black Girl:
    • Kennedy from Teens is a mild case. Maiya from Kids is a pretty straight example.
    • Brooke-Monae from Kids falls into this more often than not.
  • Screw This, I'm Outta Here: A few times, like Shane Dawson mentioned above, and even Maksim in "Kids React to Ariana Grande".
    • Lia finally got Squicked into doing this in "YouTubers React to Little Baby's Ice Cream".
    • Kids vs Food has this gem.
    Benny: How much do you think a jar (of caviar) like this costs?
    Sydney: If you say $10,000 I'm just gonna walk out of this room.
    • Sharon from Parents React has this reaction after knowing the rapper girl she had to react to was Bhad Bhabie, formerly known as Danielle Bregoli of "cash me outside" fame.
  • Second Episode Introduction:
    • Darius was introduced "Kids React To Viral Videos # 5 (Charlie Bit My Finger, Golden Voice Homeless Man, Double Dream Hands)", the second episode of Season 2.note 
    • Brooke-Monae was introduced in "Kids React To The Epic Split!", the second episode of Season 5.
    • Jenna and Daisy were introduced in "Kids React To Mutant Spider Dog", the second episode of Season 6.
  • Self-Deprecation: From some of the girls on Shit Girls Say.
    Lucas Cruikshank: "I know some girls that are more manly than me!"
    Shannon: "It's called 'American entertainment'."
    Megan: "We are stupid."
    Overlay: TRUTH
    Owen: "I'm a sick f—k, what can I say?!"
    • From "Teens React to the Cup Song"
    Kennedy: "Some of my friends are like, 'I play the cup.' I think it's a "cool" instrument to play. I just play the didgeridoo and the violin"
    • From "YouTubers React to Rewind YouTube Style"
    Ian: "It's just a bunch of random douchebags..."
    Anthony: "Some YouTube stars who "think" they are famous!"
    • This one from "Kids React to Grumpy Cat" when the kids try to come up with funny captions:
    Bryson: "'They canceled Kids React' and make him say 'Good'."
    (The Fine Brothers laugh with Bryson.)
    • From "Teens React to Twilight"
    Fine Brother: "How does it make you feel about society knowing that things like Twilight are things that become so popular?"
    Jeannie: "We suck."
    • Nick Cannon in the first ever Celebs React:
    "Yo, let's get in the studio. You make bad music, I make bad music. This could be amazing... a collaboration... it will go double cardboard."
  • Series Continuity Error: Thanks to some episodes being released Out of Order, some reactors who already graduated from a certain show will oftentimes reappear in that show's future episodes.
  • Series Mascot:
    • Lia was undisputedly the face of the series in the first six seasons. Since her departure/sabbatical, it is generally agreed that either or both Tom and Tori have filled he role.
    • In addition, each of the shows had at least one:
      • Kids: The role has been filled by Lia, the original Morgan, Dylan, Athena, the original William, Royel, Emma R., and Jaxon. Lucas and the second and younger Sydney currently fill the role.
      • Teens: The role has been filled by Lia, the original Madison, Adam, Tom, Chelsea, Tori, and Alberto. Mikaela, the second female Jordan, Marlhy, and Jaxon currently fill the role.
      • Adults: The role is filled by the original Madison, Ethan James, Jeannie, Tom, Eric, Brandon, Trudi, Scott, Tori, Sheila, and Brooklin.
      • Elders: Catherine, Don, Bill, Rock, Holgie, Robert, and Yehuda all fill the role.
      • Averted with YouTubers, as it is too much of an All-Star Cast to have one.
  • She Cleans Up Nicely:
    • Jeordy from Teens.
    • Catherine from Elders is almost unrecognizable in a pantsuit with her hair up.
    • Alix in "Teens React to Jonah Hill Controversy" is at her least emo yet. Floral top, people!
  • She's All Grown Up: The audience can actually witness several people grow up and blossom in the series. This is notable with the Kids cast who are about to move to Teens. Even some of the Teens who move to Adults will oftentimes look much better.
    Marlhy: [on reacting to her debut episode] Thank God for puberty!
    Everhet: [on reacting to his debut episode] Hard to think that somebody this beautiful used to look that bad.
  • Shout-Out:
  • Small Reference Pools: On average, about a fifth of the people already know of the subject matter. The teens (and YouTubers!) can be counted on to skew this figure up to a third, but not always - just watch what happened when Lia only just learned about Amanda Todd.
    Pamela (reacting to Breaking Dawn Part 2): "I've seen this before on TV... The Vampire Diaries."
    Evan: What if back then, if these things happened and the same thing happened, and George Bush was writing the... Democracy of Independence or something... and out comes a big bucket full of ice water. Aaaaah!
  • Special Guest:
  • Spin-Off: Teens React, Adults React, Elders React, and YouTubers React are all really this to Kids React. Parents React and College Kids React is this to Adults react. ReactToThat will be a television one for both Kids and Teens. Generations React is this to the Teens/Elders React to Election 2012 episode, but this time also bringing in reactors from Kids and Adults.
  • Squee:
    "It's heaven... It's heaven on Earth. It's Heaven in July."
    • Nearly all the celebs in response to the Japanese commercial with the Mega Neko.
  • Strange Minds Think Alike: Lampshaded when the Fine Brothers tend to edit all the nearly-identical reactions in direct succession.
    • When the elders were asked about what they'd do to the Creepy Child ("Scary Elevator Prank") and the kids about what they'd do when approached by a stuffed dragon toy ("Dragon Baby"), the phrase "probably kick it" came up both times. Similarly, both Morgan from Kids and Madison from Teens say "put some pants on" in regards to the Harlem Shake.
  • Strictly Formula: We watch a bunch of people of a certain age group (or a bunch of Internet video celebrities) watch a video or a series of videos that are related to the subject of discussion and see their reactions to those videos. Then, two producer brothers ask them questions about what they've just watched. After that, the interviewees say goodbye to us and request that we give a thumbs up to the video we've watched, subscribe to the producers' YouTube channel, and suggest a new topic for them to cover.
    • A few exceptions to the first part include "Teens React to Slender", "Teens React to Happy Wheels", and "Elders React to Flappy Bird", where they played a video game instead. These were popular enough for the Fine Bros to make a new series where they play games on the new React channel. "Kids React to Rotary Phones", "Kids React to Walkman", "Kids React to Old Computers", and "Kids React to Typewriters" had the kids actually interacting with real older technology.
    • The Very Special Episodes often lack the goodbyes and replace the intro with a message from the Fine Brothers explaining why they've decided to have them tackle these stronger subjects.
    • YouTubers React tends to be about two-thirds Internet culture (either YouTubers or memes) and one-third pop culture, up until they switched to a single video per session, which is the same with Kids React originally.
    • The first Celebrities React actually starts with the three-videos format just like Kids and YouTubers did!
  • Suspiciously Similar Substitute:
    • Emma R. is a lot like Morgan back when the latter was 5. Amusingly, Morgan after her long break is now capable of deep insights just as Emma Johnson was known for. There are some differences between what they like and dislike though; Morgan loved the PonPonPon music video, while Emma R. was just screaming in horror.
    • Derek, who joins Kids just after Bryson graduated to Teens.
    • Bryson could also be seen as an Expy of the long-absent William (though he joined the kids well before William actually left). Interestingly, William's snark and savvy seems to be separated between Eric and Adam from Teens.
    • Lydon debuts during Athena's last season, and fills her role as the generally dorky but occasional Aloof Dark-Haired Girl afterwards. Around the same time, Tori (who is the same age as Athena) debuts on Teens by the time Athena could have done so herself and displays the "wise yet snarky" traits the latter is known for.
    • Rae in "Teens React to Attack on Titan" is pretty much an Asian Lia (who's moved on to YouTubers instead).
    • Claudia in Kids takes the Valley Girl reins from Paris, who's been absent for a while.
    • Ingrid Nilsen comes across as this for Blair Fowler in "YouTubers", and even their web channels have similar demographic appeal.
  • Take a Third Option:
    • Literally in "Teens React to Rick Perry's Strong"; a snap poll is taken and it's a landslide vote against voting for Rick Perry, until Devin goes "I'm more of a Ron Paul kind of guy". This is noted beside the scoreboard.
    • Tay Zonday attempts the Knife Game handle down.
  • Take That!: With so many different reactions, some fall under this, such as this quote:
    Harley: Let us know in the comments what you think the Fine Brothers should be forcing other YouTubers to watch next.
    • From one Advice on the React channel:
    TJ Loamanu: How do I become a member of 1D?
    Jaxon: It's people like you that are wrong with this world!(sic)
  • Team Title: Episodes featuring multiple or at least two generations do this. Also the Staff React episodes which literally feature the series' production team.
  • Tempting Fate:
    "It's not violent for once." (piano falls on someone in the video) "Oops! I said it too soon."
    • New kid Evan on the ALS Ice Bucket Challenge.
    (after dunking himself) "...oh my gosh... It's not so bad." (gets a second bucket)
    • The Outlast session. Tom gets through the Almost Dead Guy scenario, then starts making his way out to the barricaded corridor, then randomly quips "ever get that feeling somebody's following you? I'm getting that right now." Cue Chris Walker grabbing him and hurling him downstairs.
      • Even better: just minutes before that we had Seth going "I am so tense right now... just (exhales) just relax." Cue the first Jump Scare.
    • Several instances have occurred on the "Try Not To..." challenges, only for the person who bragged to lose spectacularly.
  • Theme Twin Naming: The series has had several twins with alliterative set of names, namely Adolfo and Alonso, Jourdan and Jeremy, Michael and Miracle, and Vanessa and Veronica. Inverted by the show's original twins Megan and Shannon. Averted by Adults regulars Kelli and Alisyn.
  • Token Mini-Moe:
    • Kids has had Morgan, Emma R. and Cooper. Sydney and Sophie currently fills this role.
    • Chelsea from Teens, which is notable as she wasn't moved up there from Kids before. After she graduates to Adults, Jaxon eventually fills the role upon moving there from Kids.
    • Chelsea fills the role for the Adults upon graduating from Teens.
    • If the Elders even qualify, Holgie actually fills this role.
  • Tranquil Fury: Doing this is the only way to win the "Try Not To Get Mad" challenges.
  • Trying Not to Cry: The entire purpose of the "Try Not To Cry Mad" challenges.
  • Twin Banter:
    • Megan and Shannon get into this sometimes. They're notable for averting a lot of other Twin Tropes, though, so the banter often comes from them having drastically different opinions on something.
    • Allisyn and Kelli during gaming episodes of Adults.
    • Fully averted by Michael and Miracle, who are basically oil and water.
    Rafi: So have you two ever played a game together before?
    Miracle No!
    Michael: The closest we've ever been is in the womb.
    Miracle: Awww! *pats his arm*
    Michael: Don't touch me.
  • Valley Girl: Paris from Kids. "She is like The Bomb dot com!"
  • Very Special Episode: Recognizable by the message screen before the opening, and the opening itself being more "solemn" (such as the Kids React opening lacking the "children" shouting the title). The Kids React episode for the interracial Cheerios commercial did not even have a title card.
    • Kids React: The ones on Osama bin Laden's death, bullying, KONY 2012, the Cheerios "Just Checking" commercial, same sex proposals, its Sequel Episode on same sex marriage ruling, and In A Heartbeat were more serious and more thought-provoking than the average episode (especially the KONY 2012 video).
    • Teens React also covered bullying, having been shown the Amanda Todd video on React's one hundredth episode. Weeks later, they've covered the Sandy Hook Elementary School shooting in Newtown, Connecticut. They were also shown the "Jeff Bliss" video, although that wasn't quite as serious as the other two. The teens have also covered the creator/Jonah Hill controversy, which lead to a discussion about homophobic slurs. And on top of that, they have covered the topic of drunk driving. In 2016, they did the Donald Trump Access Hollywood tape scandal (even though there was a traditional title card opening). In 2017, they reacted to DACA.
    • The Memorial Day episode "Elders React to Homeless Transformation" doesn't do anything different with the opening, but is intended as such.
    • College Kids react to Racism in America.
  • The Voice: The brothers never appeared onscreen until Benny appeared in the bonus footage of "Teens React to Prank vs. Prank'' (as well as Rafi's hand). Both of them appeared in a main video for the first time at the end of "Teens React to Harlem Shake". This is because obviously they want the focus on the subjects, not on them. Besides, it doesn't matter much, since they have appeared in the flesh in their other shows well before these videos were made.
  • The Voiceless: More and more often in the React channel productions.
  • We Hardly Knew Ye: Any of the Reactors who appear in only one episode. Although this is slightly subverted in recent years - along with a React episode, the one-shots might also appear in a single Laugh Challenge or Do They Know It? filmed that same day.
  • Why Did It Have to Be Snakes?:
  • Wrong Genre Savvy: A few examples across all media.
    • In "Kids React to Never Say No to Panda", the children thought the titular series of adverts were from China (owing to there being a massive panda) or Japan (since adverts there are considered more weird and surreal compared to the United States). It was actually Egyptian.
    • In "YouTubers React to Rick Roll", Justine thought that the news report would be some news that Rick Astley had felt somebody up.
    • In "YouTubers React to Viral News Clips", Kurt Schneider, plus a few others, thought that the news clips would be autotuned. This caused them to get so distracted that they were not entirely sure as to what they'd just watched.
    • In both the Kids React and YouTubers React episodes of Don't Hug Me, I'm Scared, the participants mistook it for a British version of Sesame Street. It was far worse, needless to say.
  • Worthy Opponent: Both Sharon and Nicole consider each other this. Sharon never gives in on the punishment foods because she knows that's what Nicole wants... and Nicole just keeps making them worse because it is, indeed, true that she wants to break Sharon. Despite vomiting after eating delicious shit, Sharon is still going strong.
  • Xtreme Kool Letterz: The series has had Alix and Jaxon, so far.
  • Younger Than They Look: Quite a few of the kids and teens. In particular, Mikaela only just joined Teens React, by way of turning fourteen well after Bryson and Seth, both of whom easily look younger than her.

    Kids React 
  • Adorably Precocious Child: Morgan, hands down.
  • Advertised Extra: Marlhy is credited as a reactor during the "Harlem Shake" episode despite her sole appearance being in one of the videos made by the cast and crew that the kids reacted to. Everhet, who is a reactor that episode, wasn't credited.
  • The Artifact: Emma R. is still initialed years after the original Emma, Emma Johnson, has left the series.
  • Big "SHUT UP!": Landon has one in the Nyan Cat episode when he's finally had enough of seeing the video.
  • Big "WHAT?!": Morgan every now and then.
    Anthony Padilla: "Was she doing an impersonation of a parrot?"
  • Blinding Camera Flash: When reacting to an '80s camera, several of the kids discover exactly why selfies didn't become a thing until cell phone cameras were around.
  • Bowdlerisation:
    • While Elders and Teens got to react to "Anaconda" by Nicki Minaj, the Kids instead got "All About that Bass" by Meghan Trainor, a family-friendly take on the same subject.
    • The "Mötley Crüe" episode omitted to show the music videos for "Dr. Feelgood" and "Girls, Girls, Girls" due to the drugs, violence and sex involved.
    • Zig-Zagged during the "Madonna" episode. The singer's sexually-charged music videos were either heavily edited or not shown at all, but her costumes in the ones shown remain intact. Also, few of the kids did noticed the sexual nature of those videos anyway.
  • Cheerful Child: Many, many, many kids. And they're all adorable! Aw... CUTE!
    • Special mention goes to Cooper, currently holding the record for youngest child by joining up at the age of 4.
    • Morgan, who wants to teach Honey Boo Boo how to play baseball.
  • Children Are Innocent: Occasionally subverted, but played straight a surprising number of times. For example, one kid commenting on "Don't Hug Me, I'm Scared" (particularly a disturbing part where a cake is cut open to reveal red, raw meat) insisted it was just "peanut butter and jelly," prompting the Aw... CUTE! overlay. Also, none of them understood why anyone would get angry over the Cheerios commercial portraying an interracial family.
  • *Cough* Snark *Cough*:
    • Lia, when asked about what does she think about people who do LARP: "*cough* Nerds!"
    • Similarly, Seth on whether the Dragon Baby was real: "*cough*CG*cough*"
  • Cover Innocent Eyes and Ears: In "Kids React to Teddy Ruxpin", each kid is given a Teddy Ruxpin doll. When they are asked why the dolls aren't popular anymore, Morgan A. responds:
    Technology is like, booming and great and so by then we had computers and touch screen phones and all that and nobody really cared about Teddy anymore. (covers Teddy's ears) I hope he didn't hear that.
  • Creepy Child: 6-year old Royel sometimes says some unnervingly morbid things.
    (on caviar) "It tastes like eating another thing's dead body!"
  • Cute Mute: Royel, when he's not speaking.
  • Deadpan Snarker: Dash, especially impressive considering he's not even ten years old.
    [When prompted to enter his name in a game] I'm just gonna do DASH, because I have no imagination.
    [When asked whether or not he recommends broccoli, in a completely flat tone] Yes. Look at it. Look how appetizing that looks.
  • Dissimile: On "Kids React to Pumped Up Kicks Dubstep":
    Benny Fine: How would you describe the way he was dancing?
    Emma: Just like Michael Jackson... except Michael Jackson's dead and that really sucks.
  • The Dreaded: The kids are not fans of Poppy, as they find her creepy.
  • Dude Looks Like a Lady: Thanks to his long locks, Gabe looks very effeminate. He even lampshades the the fact during "Kids React to the Face Swap App".
  • Elmuh Fudd Syndwome: Emma R., though she eventually overcomes it.
  • Entendre Failure: The suggestive lyrics from "Live While We're Young" are lost on some of the kids.
    Benny Fine: "'Tonight let's get some/And live while we're young'. Get some of what?"
    Royel: "Pancakes? Chicken McNuggets?"
    Dylan: "Sandwiches?"
  • Failed a Spot Check:
  • Flat "What": William's reaction to the existence of a six-hour version of Nyan Cat on YouTube.
  • From the Mouths of Babes
  • Fun with Subtitles: Occasionally, or rather especially when Royel is involved.
  • Girls Love Stuffed Animals/Security Blanket: Athena Stamakinley is virtually never seen without Toasty, her stuffed koala, which even appeared at the Emmys wearing a matching dress! That, and she's 14, pretty much ready to move on to Teens React!note 
  • Harmful to Minors:
    • When they compared Ariana Grande to Miley Cyrus, a couple of the kids accidentally outed themselves as having watched Wrecking Ball.
    • Averted in "Kids React to Luigi Death Stare" - the videos use the most commonly used tune, "Ridin'" by Chamillionaire, but only the bridge and not the whole song.
    • Jaxon and Tyler F. have both seen the uncensored version of The Room, as revealed when the kids reacted to the (censored version of the) film.
  • Heroic BSoD: Played for Laughs during the episodes reacting to "Going to the Store" and "Late for Meeting". The kids were so confused and had no idea what they just saw for them to even say anything about them (the first especially).
  • Improbable Hairstyle: Olivia's 'do is particularly bouffant for a 12-year-old. Same goes for Chloe.
  • I'm Taking Her Home with Me!: Morgan on the Nyan Cat: "Didn't you want to kidnap her, people?"
  • Ineffectual Death Threats: Jayka infamously made these during Kids React to Harlem Shake (her debut, incidentally).
    Jayka: If you make one more video, I will pull your brains out... and feed your liver to my dogs!
  • It's Hard, So It Sucks!:invoked Within the show, a lot of the kids have this reaction when presented with old technology.
  • Jitter Cam: "Kids React to 10 Bets You Will Always Win", though this was only to get a close-up view of the kids' fingers when they attempted to replicate one of the pranks.
  • Keet: A lot of the kids simply because they're so young and energetic, but Lucas and Sydney certainly stand out.
  • Little Miss Snarker: A lot of the girls are snarky and sassy for their age. Notable examples are/were the original Emma, Marlhy, Emma R., Jayka, Brooke-Monae, and the younger Sydney.
  • Men Don't Cry: When the brothers reveal the they cried at the end of The Return of the King:
    Paris: "Men crying? You guys are kinda... weird."
  • Mouthy Kid: Several. While those kids are too snarky for their age, most of them are also Wise Beyond Their Years.
  • Named After Somebody Famous: Maksim, as mentioned below. Dash is a pretty obvious one.
  • "No. Just… No" Reaction: Dominick has this reaction in Kids React to Bhad Bhabie after seeing her.
  • Pink Girl, Blue Boy: During the earliest episodes, the wallpaper of the room is changed accordingly to match the gender of the featured kid. The original Morgan and Marlhy were notable exemptions, as they both mainly appeared in the blue room during their earliest episodes before eventually "complying" with the theme.
  • Precocious Crush: Morgan seemed to have one on Benny. Until they told her that Smosh was more popular, anyway.
  • Rapidfire No: Lucas.
  • Retraux: Newcomers Thomas and Derek are rocking a '70s moptop and '90s slicked-back do respectively, something you really wouldn't expect to see in Kids.
  • Sarcasm Mode: Dylan. Frequently.
  • Slow Clap: From Bryson in "Kids React To Fake Celebrity Prank NYC".
  • So Bad, It's Good: invoked The kids have discussed the Bile Fascination reputation of some works, such as Rebecca Black's songs (particularly Friday) and The Room.
  • Space Whale Aesop: From "Kids React to Simon's Cat":
    Bryson: "Remember to feed your cat or he'll hit you with a bat in your sleep."
  • Speak in Unison: Megan and Shannon occasionally do this.
  • Spell My Name With An S: One of the kids is spelled either Maksim or Maxim. Maksim is also a piano player while Maxim is an adult mag... Oddly enough, new episodes with him use the latter spelling.
  • Spiritual Adaptation: invoked Lucas (rightfully) thinks that Kids React to Brave Wilderness is essentially a Try Not To Look Away Challenge in all but name.
  • Tears of Joy:
    • The kids fake them at the end of "Lily's Disneyland Surprise...AGAIN!"
    • Elle plays this straight in "Kids React to One Direction". It has been a Running Gag since how much of a Fangirl she is.
  • Title Scream: "Kids React to [Category]! This episode: [Subject]!"
  • Troubling Unchildlike Behavior: Some of the things that comes out of Royel's mouth is not what you'd expect from a little kid. He also sings along to the "Don't Hug Me, I'm Scared" video.
  • True Blue Femininity: Both the original Morgan and Marlhy notably defy the Pink Girl, Blue Boy setting of the earliest episodes by constantly appearing in the blue room during their first few episodes before eventually "complying" to the theme. Bonus points for Marlhy wearing a navy blue shirt in her debut.
  • Unfortunate Names: Discussed during the "Lady Gaga" episode when Megan and Shannon mention the singer's name translating as "Lady Stupid" in Filipino, and the Narm it might cause everytime she goes there.
  • The Unintelligible:
    • Royel, when he's speaking. He sometimes has to be subtitled.
    • Same goes to Emma R. at times.
  • The Unreveal: During Kids React to Keyboard Cat, Sammie quips her annoyance that her family can't have pets because her sister is allergic to animals. She didn't specify if it's Lia, Emma, or their other sister who's not part of the series. It doesn't help that The Fine Brothers' immediate reaction to Sammie's remark suggest that the sister she's talking about is right there, despite both Emma and Lia mentioning in the same video that they like cats, the latter even openly Squeeing like Sammie throughout.
  • Unusual Eyebrows: Lucas. They look like a misplaced mustache.
  • Villain Song: A "Do They Know It?" episode features the ones from the Disney Animated Canon.
  • What Are Records?: The kids in Kids React have no idea how to work a rotary phone. Granted, rotary phones have been obsolete for longer than some of the kids have been alive, but it's still interesting to watch their confused reactions. Dylan however is usually remarkably quick to pick up on whatever older tech the Brothers hand him and, unlike the some of the other kids, appreciates how important its impact was.
  • What Were They Selling Again?: In "Kids React to The Epic Split", some of the kids don't even realize that the video they've seen was a commercial.
  • Wimp Fight: What Megan and Shannon do when asked if they could do any karate moves.
  • Wise Beyond Their Years:
    • "Kids React to Controversial Cheerios Commercial" revealed this about several of them.
    • Morgan and Cooper's total lack of any aversion to "Don't Hug Me I'm Scared". Royel in particular had seen it before!
    • William has seen most of the videos on the show, is rather snarky, and shares pretty deep insight on sensitive subject matters such as bullying or politics - he even knew who Muammar Gaddafi was, which is pretty impressive for a kid his age.
    • Dash, in particular, is quite articulate and snarky for being nine years old:
    (sees an old Mac computer) "How very hipster."
    • New girl Sydney may not be old enough to be snarky, but shows some surprising insight at times.
    • "Kids React to Girl on Motorcycle vs Littering". While some of the "victims" certainly earned their comeuppance, Tyler's the first one to say "two wrongs don't make a right".
  • You Bastard!: The kids scold the viewers for having the Fine Bros show them Don't Hug Me I'm Scared.

    Teens React 
  • Always Camp: Sam, before he came out as gay, seemed Camp Straight.
  • Anime Hair: Eric describes Tom Fletcher's hair as "looking like an anime character" in "Teens React to My Wedding Speech".
  • Armor-Piercing Question:
    • When a couple of the teens say there should be some limitations on transgender rights, the Fines ask how that would be different from the racial segregation of the '50s. They all need a moment to take that in and admit that they'll have to think long and hard on it.
    • After watching news reports on the killing of Cecil the lion, the teens all have some very strong words of outrage. The Fines then ask if they're vegetarians, which almost none of the are, and ask how that's different. Though this time some of them have a good response ready (the animals they eat were specifically bred for it).
  • Arson, Murder, and Jaywalking: When the teens are asked to say a few words to the Stage Moms of Toddlers & Tiaras:
    Kostas: "Take it easy."
    Sam: "STOP!"
    Adam: "Listen to your kids, if they don't want to do it, you SHOULDN'T make them do it."
    Rumor: "And for the most of you, get on a treadmill! Oh my god."
  • Bestiality Is Depraved: In "Teens React to Taylor Swift - We Are Never Ever Getting Back Together", Victor noticing all of the actors dressed up in animal costumes.
    Victor: "Maybe she likes animals... No, not like 'likes animals' likes animals!"
  • Big "NO!": Tom's reaction when he finds out he's playing Five Nights at Freddy's 2
    Tom: "If this is anything like the first game, I'm probably gonna pee myself."
    Will: NO! NO! NO! No, this i-NO! No! No! <Beat> No! <points accusingly at the Oculus> Nnnnno!
    • Rumor's reaction when she finds out she's reacting to Miley Cyrus's "We Can't Stop."
  • Book Ends: Chelsea deliberately wears the same flannel shirt she wore on her debut during her final Teens episode before graduating to Adults.
  • Button Mashing: The teens give us a fine example in "Retro Gaming: Mike Tyson's Punch-Out!!", with some even acknowledging the fact that they have no idea what they're doing and are just rapidly pressing random buttons.
  • The Cameo/One-Scene Wonder: Harley Morenstein, what are you doing here? You're not a teenager!note 
  • Camp Gay: Sam, newcomer Gavin, and Teen!Sergio have these characteristics.
  • Cerebus Retcon: Labib's joke about Guantanamo Bay (re. "Gaming: Happy Wheels #2") takes on a Black Comedy turn in "Teens React to Malala", where he and Jasser reveal that they really have had encounters with post-9/11 discrimination.
  • Chivalrous Pervert: Ethan sums it up with this mission statement (re. "Teens React to Anaconda").
    "As much as I enjoyed it, it was too much!"
    • Troy in "Teens React to J-Pop" has one of these moments while watching the video for the Japanese girl group AKB48's single, "Heavy Rotation". At one point, one of the group's members kisses her reflection in the mirror. Troy quickly looks away from the screen, then right back, and remarks:
    • Seconds later, we see two members of the group kiss on the lips, and then kiss another member on each of her cheeks. Once again, Troy (this time, while giggling):
    "OK, that wasn't a mirror! That was not a mirror!"
  • Darker and Edgier: Compared to Kids React, Teens React tends to tackled more older and adult topics. In his first episode after graduating from Kids React, Troy lampshades the difference in topics.
    Troy: This is different from Kids React. I was like watching Frozen-things, now I'm watching Nicki Minaj butt-naked.
  • Distracted by the Sexy:
    (On the Pitch Perfect "Cup Game" clip with Anna Kendrick kinda bending over)
    Rumor: "Can I just say that on Pitch Perfect, her... cleavage kinda bothered me..."
    Ethan James: (kinda stoned) "Like, she's really good... and she's hot, so I'd settle for her..."
  • Double Entendre: Not often, but several of the teens can pull off some pretty nice ones if they get a chance. When the Reactors played The Walking Dead and learned about Lee's backstory (killing the man his wife was having an affair with), Becca smacked one out of the park after Clementine asked about it.
    Clementine: That lady said you killed someone. Was that because he was one of the things trying to eat you?
    Becca: No, he was trying to eat...someone else.
  • Emo Teen: Alix and Nora were both dour and kranky during their time on the show. They seem to have outgrown this when they moved to Adults.
  • Formerly Fat: Labib. Rather like the Cerebus Retcon above, it's mentioned briefly in "Teens React to Malala" and soaked in Sarcasm Mode, but then in Opinions #5 he goes into it a bit more.
    • DJ also mentions in the Amanda Todd episode that he used to he overweight and was bullied for it.
  • Fun with Acronyms: When the teens attempt to guess what the FPS in FPSRussia stands for.
    Madison: "Oh. Future Pig... Sss... I have no idea."
    Lia: "For Peoples' Safety!"
    Eric: "Frequently... Piledriving... Sumo-wrestlers."
  • Episode Title Card: Sort of; it's the only React series that has a visibly unique Title Sequence for each episode, using black-and-white screenclips of some of the teens who appeared on the episode.
  • "Eureka!" Moment: Lyric Breakdown sometimes has the teens figuring out the song in a certain lyric (at times, the first). Subverted when they still miss it (once the Title Drop of "Gangnam Style" shows up, some don't notice that's that song translated!) or figure it out wrong ("Oh can't you see, you belong to me" has a guy thinking the song is "You Belong With Me").
  • Even the Girls Want Her:
    • Lia's opinion on Jennifer Lawrence. "Boy or girl, they wanna marry her".
    • And again for "Blurred Lines": "These girls are so pretty, I can't even deal..."
  • Everyone Is Jesus in Purgatory: invoked Lyric Breakdown is all about this, specially when Word Salad Lyrics such as "I Am the Walrus" and "Smells Like Teen Spirit" are presented.
  • Gamer Chick:
    • Of all the girls on the show, Rae is usually the best all-around player (she nearly kills the first boss of Dark Souls without the plunging attack!), and has spoken of her love for The Elder Scrolls V: Skyrim. When she, Mikaela and Seth play Life Is Strange, she has the shortest adjustment to mastering the rewind system, and after struggling with the dual-thumbstick manipulation of another mechanic, a frustrated Seth hands her the controller; she nails it in about 3 seconds.
    • Tori is also quite successful. Highlights include winning the ARMS tournament, being the only to beat the second level of I Am Bread (with a C, much better than the D and E every victor in the other levels got), and getting to level 10 in Duck Hunt.
  • Half-Identical Twins: Michael and Miracle.
  • I Am Not Pretty: Marlhy and Lydon both reveal in the respective episodes where they were reacting to their debuts that they think they were unattractive as children. While puberty certainly did them well (as Marlhy herself puts it), they were regarded by many as two of the best looking cast members of Kids during their time there.
  • The Ingenue: Madison gives off this vibe at times, from her hilariously dorky sense of humor to her being the most easily grossed out of all the teens.
  • Innocence Lost: Happened to quite a few recent graduates from Kids during their first episode here. Troy and Jaxon in particular both made their debuts when their respective episode's topic is about a Hotter and Sexier music video featuring very sensual Idol Singer flaunting their assets.
  • In the Hood: Ethan in "Teens React to Prank Vs Prank". May be justified as everyone seems to be dressed warmly for this one.
  • Kaizo Trap: In "Try Not To Get Mad Challenge #5," the last round required the teens to eat oreo with a glass of pickle juice. The crew then said they could eat the oreo alone as a form of apology for subjecting them to the challenge only to find out the crème filling had been replaced with toothpaste. Troy and Jair who had not been angry up until that moment fell into the trap and immediately lost the challenge.
  • Kubrick Stare: All the teens imitate it during the "Teens React To Jackfilms" video.
  • The Lad-ette:
    (From "Teens React to Psy's Gentleman".)
    Lia: "He farted and he put it in her face!" (laughing)
    Benny Fine: "Has anyone ever done that to you?"
    Lia: "I'VE done that to someone else!" (still laughing)
  • Lovable Jock: Shant is oozing this from head to toe - musclebound, spiked-up hair (which has grown out a bit), chiseled jawline with Perma-Stubble and some kind of necklace sometimes, and just as articulate as any of the Teens.
    • Ethan James was certainly indulging his inner jock during Gaming with Trials Fusion.
  • Making Use of the Twin: invoked On how one would win The Hunger Games:
    Jourdan: "I have a twin brother; so you wanna know what that means?! I play for half the game, and when I get tired - switch out! And he'd be at full energy, like smack-smack-smack-boom-boom-pow-pow-cut-cut! Easy."
  • Manly Tears: Eric in Teens React to My Wedding Speech.
  • Memetic Badass: invokedIt seems this is what Ethan James sees about Norman Reedus as the protagonist of Silent Hills.
    Ethan James: Oh, it's the guy from The Walking Dead! If I knew I was [playing as] him, I would be fine all along!
  • Mondegreen Gag: Adam misheard "Wet PSY" as "Westside". Easy mistake.
  • Nice Guy: Tom just seems like one of the nicest guys ever. Case in point, Out Last 4 when he ends up genuinely apologizing too and feeling bad for calling a video game character fat. Josh, Troy, Eric, Carson and Adam all count too.
  • Nothing Is Scarier: The April Fools' Day video, Teens React to Nothing, elicited this reaction from some of the Teens. After staring at a blank screen for several minutes they became concerned that the video would turn into a screamer, or that somebody was going to jump out behind them.
  • Oh, Crap!: The general reaction to the Slender episode of Teens React among the teens in question. Except for Adam, who's giggling in excitement.
  • Open Mouth, Insert Foot: A rather jarring one from Alix in the Amanda Todd episode. She talked about how "nobody gave a shit" about other people who committed suicide for "better reasons", which we can all agree is not an okay thing to say. One quick look through the comments in the video and you'll find dozens of angry comments deriding her for what she said.
  • Precision F-Strike: Quite a few during the more serious ones, AND in Slender. All their reactions are extremely justifiable in all these cases.
  • Pretty Boy: Tom, natch.
  • Pretty Fly for a White Guy: Jeordy., Josh and Eric are all good examples. Jourdan is a rare Asian example.
  • Pungeon Master: Madison at the end of Teens React episodes that feature her has her telling jokes that have Incredibly Lame Puns for punchlines. Carson and Josh have been like this in Gaming episodes lately.
  • Real Men Wear Pink: Resident Face of a Thug Adam doing impressions of Antoine Dodson, the "Honey Badger" guy and his idea of a girl from "Shit Girls Say". Seven Teens React episodes after the one for My Little Pony: Friendship Is Magic, he's got his own brony tee. Not to mention the fact that he learned to play Taylor Swift's "You Belong With Me" on guitar for, in his words, "y'know..."
    Overlay: PLAYA!
  • Retraux: Newcomer Carson has some real nice slicked-back hair, something you wouldn't expect a 15 year old to have.
  • Running Gag: Unintentional, but despite repeatedly stating he's a gamer, Labib almost always produces the worst results at video games.
    • Subverted in the third Happy Wheels outing, with a montage of Labib getting closer and closer to the finish line (but still dying).
    • Subverted in the Just Dance 2016 gaming episode in which he got a higher score than Tori, who said she played the game regularly. And the Mario Kart 8 Deluxe tournament, where he even notes finally winning one of these.
    • Eric attempting to give out his number to a hot chick he wants to date/YouTuber he wants to do a video with, only to have his mouth blurred and his voice bleeped while giving out the seven digits after his area code (which is 925).
    • During "Teens play Dark Souls", every single one of the teens reacted the exact same way during the rematch with the Asylum Demon- they panicked, most of them futilely tried to run back through the fog gate again, the demon leaped up and smashed the platform they were standing on, they fell the to ground and it flattened them in 1 hit. Even the ones who'd read the note about plunging attacks. Every. Single. One of them.
  • Samus Is a Girl: Courtesy of the Trope Namer herself! Several of the teens (especially Tori) are shocked to learn that the character they were playing as in "Teens React to Super Metroid" was a woman.
  • Slasher Smile: Alex Cimorelli gives off one hell of a Slasher Smile in "Teens React to Jacksfilms".
  • Soul Brotha: Isaac.
    (reacting to FPS Russia): "You wanna see guns, just walk into the 'hood!"
  • Spoiler Opening: The title card shows black and white photos of the teens who appear in that particular episode.
  • That Man Is Dead: Played for Laughs when the inevitable mention of Alex Steele being cast as two different characters from Degrassi comes up. "She was attacked by a honey badger."
  • That's What She Said: Ethan James gleefully sneaks one in in the deleted reactions for "Teens React to 90s Internet", when a girl in "The Kids Guide to the Internet" says, "It sounds like it'd be so hard!"
  • Tomboy and Girly Girl: When they're paired together, Rae and Mikaela come across like this. Not only is Mikaela more laid back than Rae, but she usually wears blouses and jewelry, while Rae often prefers t-shirts.
  • Unkempt Beauty: Lia's embraced her ragamuffin side during the period that the "Thrift Shop" one took place, appropriately enough.
  • Unusually Uninteresting Sight: During Mikaela, Seth and Rae's chapter 4 Let's Play of Life Is Strange, all three are so focused on a cutscene that Seth never bats an eye when Rae reaches up under her t-shirt to adjust her bra.
  • You Need to Get Laid: This was what Isaac felt PewDiePie should do.
    Isaac: Man, I honestly feel like he needs to get a hobby - or something, you know what I mean, get some females or something. He seems bored.

    Elders React 

    YouTubers React 

     Adults React 
  • Ascended Extra: Despite being an original Teens cast member, Austin only appeared in the Teens React premiere. He made frequent appearances on the shows once he joins Adults.
  • Black and Nerdy: Dominic. He's the main black guy on Adults but he enjoys superhero comics and plays Super Smash Bros. 24/7, according to him.
  • Cosplay: In Adults React to Suicide Squad (2016), Jennifer said she cosplayed as Harley Quinn multiple times. In College Kids React to Comic-Con Trailers, Rachel and Chelsea both revealed they'd attended SDCC 2017, cosplaying as Princess Leia in a miniskirt and Clementine from The Walking Dead video game, respectively. Chelsea even sounds a bit like Clem.
  • Early-Bird Cameo: The College Kids React segments frequently features Teens who are in their last year on their respective program before their official graduation to actual members of the Adults cast (e.g Chelsea, Brooklyn, Nora, Tori).
  • Flashback Within a Flashback: During Adults React to Try Not to Feel Old CHallenge #3 when Madison was shown Gangnam Style video, she said she literally remembered reacting to it. Instead of having a proper flashback to the original video right away, a flashback of her reaction in another Psy video, which contain a flashback to the original video, appeared instead. The way it was pieced made it look like this trope happened.
  • Girliness Upgrade: Alix was notably an Emo Teen during her time on Teens, but once she graduated here, her overall style gradually becomes more feminine and "cutesy".
  • Growing Up Sucks: Invoked, Enforced and Played for Laughs in the "Try Not To Feel Old Challenges".
  • Kicked Upstairs: Rachel once she joins production full-time, has only appeared in the Staff episodes but rarely appears.
  • Lipstick Lesbian: Morgan, who never gave any indication of her orientation during the Teen years.
  • My Nayme Is: Rna. It's supposedly pronounced "Renee", and always brings up comments calling her Ribonucleic Acid.
  • Retool: The Fine Bros. once considered making a Parents React, but ended expanding on that: Adults React now encompasses Young and Middle-Aged Adults note  with the occasional Parents episode for those with grown offspring.
  • Perky Goth: Ary perfectly fits this trope. Alix is slowly becoming this as well, keeping her perky personality but becoming more emo as it progresses.
  • Sore Loser: Trudi every time she loses a challenge.
  • Super Drowning Skills: In a clip on the Don't Smile Or Laugh where someone falls into a swimming pool, Michelle states that she can't swim and she would drown if it was her.
  • The Big Guy: Beau is SEVEN feet tall. And a Challenge Chalice episode had him play "Siamese Twins" with the One Head Shorter Chelsea...
  • Took a Level in Cynic: Ethan James notably soured on the idea of love and marriage when he reacted to his debut Teens React to My Wedding Speech. Specifically, he repeatedly lambasted his past self for being a Wide-Eyed Idealist and is actively cringing all throughout.

    React channel 
  • The Ace: Usually with some of the games played, there will be at least one teen who is either extremely familiar with the game, or who catches onto the mechanics with relative ease.
    • Newcomer Will has demonstrated his gaming prowess enough times that one of the other teens came up with a Badass Boast on his behalf.
    • In the Don't Smile or Laugh Videos, Sharon has not lost a single one since her debut to the challenge.
  • Achievements in Ignorance: The long awaited Gaming with Five Nights at Freddy's. Sam realises the left door and light are glitched, then checks the tablet, causing Bonnie to jump him the moment the tablet goes down. Tom goes through the same thing, looks left and right and keeps hitting the switches without checking the tablet - and makes it to 6 am.
    • More often than not, the Retro Gaming episodes will have the Teens falling to this. The very first (Teens React to the NES) has a few, including guest Maisie Williams, dying on the very first Goomba of Super Mario Bros.. And a blatant example is Jeannie ending Mega Man with 0 points because she only found out the ability to shoot right before the game over.
  • Adaptation Expansion: The first of the new React Channel shows (React: Gaming) basically takes the Let's Play-esque React episodes (e.g. Slender and Flappy Bird) and turns it into its own thing.
    • Due to the popularity of the gaming sessions, the Fine Bros. decided to expand the videos to twice a week to allow the teens to complete Let's Plays of the longer games like Outlast and The Last of Us.
  • Arrogant Kung-Fu Guy: Ethan James comes across as this, claiming he'd clocked in the most experience with Trials Fusion - before proceeding to come in second (with Adam and Jeordy tying for first place). Turns out his real strength was in the trick flip round, where he proceeded to get over 35k points, with the second placer at about 15k. And he's been known for Unsportsmanlike Gloating, though he does have the skills to back it up.
    • Comes full circle in the Super Smash Bros. Wii U competition, where Everhet ends up beating him with ease.
    Sabrina: I kind of suspected you were going to win though. I had this gut feeling cause like he was talking smack but I feel like you actually knew what you were talking about.
    • Troy gets to back up his talk when The Last of Us plays to his true strength, FPS.
  • Attack! Attack... Retreat! Retreat!: Sydney on unagi (eel) sushi.
    Fine Bros: Ready for your next piece?
    Sydney: I shall slay the beast!
    (Unagi sushi is placed in front of her)
    Sydney:...I shall not slay the beast!
  • Awesomeness by Analysis: The Super Meat Boy and Duck Hunt videos saw the kids and teens catching onto the game mechanics successfully through trial and error.
  • Blazing Inferno Hellfire Sauce: The Adults vs. Food episode for hot wings coated in different sauces have them try out different wings that start off mild enough, then crank up the heat with each one!
  • Bragging Rights Reward: The first few Try not to Eat Challenges don't have anything for the ones who eventually don't give into temptation. At a certain point it was fixed by giving the resistant people a special dish (and those who caved in a disgusting one).
  • Cluster Bleep-Bomb:
    • In the second Outlast video, Adam says "shit" about 25 times really fast when he's caught. However, since the Fine Bros. censor the word, this is the result.
    • In the second PT video, Ethan James started Lampshade Hanging his excessive cussing.
    "I'm just gonna be cussing the whole time until we get there 'cause of f[bleep]ing bullsh[bleep] out in f[bleeping]ing bullsh[bleep] alley, in the town of This Sucks Ass."
    • In the second Affected video, Jeannie's response to a scary corridor.
  • Continuity Nod:
    • The second session of Slender is a fairly obvious one. Not only do they bring back some teens from the first one but their progress back then was listed, and Adam claims that getting only three pages became a Never Live It Down moment for him. And it was the best any of them did, too!
    • The first retro-themed Gaming deliberately reused the NES system from the first Teens React with retro technology.
    • The Gaming session of Trials Fusion immediately drew comparisons to Happy Wheels.
  • Cool and Unusual Punishment: Challenge Chalice has the losing team (or producer Alex, when it's everyone together) enduring one, usually edible.
  • Covered in Gunge: Many of the Challenge Chalice episodes, with indicative names such as Eat It or Wear It and Extremely Messy Twister.
  • Curb-Stomp Battle: A few head-to-head Gaming battles. And when a Guess That Song Challenge goes 4\5-0 (Jordan or Catherine are usually involved).
  • Damned by Faint Praise: In Kids vs. Food with caviar, Sydney said she preferred the crackers they put the caviar on.
    • Dylan was the only one to recommend natto, if only for the experience.
  • Determinator: The Platform Hell games Sonic Unfair and Unfair Mario have some players not giving up until they beat it. In the latter's case, this includes Morgan, who's usually not very lucky in the gaming episodes. Dark Souls III also had one Teen taking ten attempts at defeating the first boss (while others - including Morgan... - gave up much earlier!).
    • Some of the Food challenges count too - eating spicy food or being willing to eat dead tarantulas\live worms isn't for many!
  • Description Cut: Featured in part 3 of Teens Play Undertale.
    Tori: Wait, so is that an option, then? Like, even when he grants you mercy, to just kill him? That's sad. I don't know anyone who'd want to kill Papyrus.
    Seth: Yeah, let's kill him. [selects Fight command, delivering the mortal blow]
  • Earn Your Fun: Often demonstrated in Gaming, as bosses (Dark Souls, Sonic the Hedgehog) and cruel design (Unfair Mario, I Am Bread) being overcome lead to ecstatic reactions.
  • Everyone Has Standards: In the Google Feud video, Ethan writes "Die" for "The poor should..." just for the fun of it and was genuinely horrified that it was no.1 After losing that round, the remaining answers for that question horrified him just as much.
  • Fake Food: An April Fools' Day episode had the reactors served comfort food that was actually something else: grilled cheese(-shaped cake), (mashed potato) sundae, (krispies shaped as) chicken wings, burger(-shaped cupcake), and (ice cream) spaghetti.
  • Failed a Spot Check: Dylan didn't recognize (cubed) tofu in it's titular Kids vs. Food episode despite eating it on a regular basis.
  • Foreign Queasine: Apparently the point of Kids vs. Food, but actually subverted as the items are a bit more common than you'd believe. Then again, Vegemite is an Australian thing so the "foreign" bit stands.
    • Some of the dishes on Teens vs. Food too, including the terribly smelly Surströmming.
  • Fourth-Wall Mail Slot: Advice is all about submitting the same questions to Kids, Teens, and Elders.
  • Gilligan Cut: In the Guess That Milkshake Challenge, after the first milkshake, Tyler says he was worried that there would be weird milkshake flavours like bacon. The immediate next flavor is just that.
  • Hair-Trigger Temper: Sean, editor and vlog producer for FBE, gets mad at eight of eight videos during Staff Reacts' Try Not to Get Mad Challenge #3. In the next mad challenge, while he doesn't get mad at all of them, he holds the record for the amount of videos he gets angry at.
  • Hated by All:
    • None of the ten kids in the "Vegemite" episode of Kids vs. Food liked the Australian delicacy.
    • Anchovies received a similar shut-out in the "Pizza Toppings" episode. You know it's bad when a few of the kids consider squid ink a step up.
    • Natto wound up being recommended by Dylan, but only so that someone could understand just how horrible it is.
    • Jellyfish also joined the list of "Kids vs. Food" shutouts. None of the kids were even able to swallow a bite.
    • Now you can add bacon-flavored soda to the list.
    • Ghost peppers were tried by the Adults...and none of them liked it. (the Carolina Reaper and Toe of Satan got some recommendations, if only as Schmuck Bait)
    • Same thing when they tried cat poop coffee.
    • When it comes to Weird Burgers, none of the Kids liked salmon or canned burgers.
  • Here We Go Again!: For either game series (Five Nights at Freddy's) or ones inspire multiple episodes (I Am Bread), sometimes the same player is brought again. If the experience was unpleasant to begin with, there will be revolt and threatens of Rage Quit.
  • Improbable Aiming Skills:
    • Troy owns the FPS parts of The Last of Us.
    • Seth in Duck Hunt not only gets more than one perfect score, but manages to score hits while "just waving it around" and one time by looking away!
  • Incredibly Lame Pun: From Advice:
    TonyTigger: What are some good warrior names for my cat?
    Elle: Katniss! (beats out her own {{rimshot}} on the table)
  • Jump Scare: Not counting all that happen in the horror games episodes, two challenges have one of those to make them Unwinnable - "Try not to Get Scared" tricks the remaining reactors into thinking they would see one last clip as someone in a mask jumped on them, and "Adults Try not to Move" had everyone flinching to a video of a snake attacking the camera.
  • Killed Midsentence: Don, when playing Call of Duty: Advanced Warfare, recognizes an area he visited in real life (Greece), he starts talking about his visit until his character gets killed unexpectedly.
  • Let's Play: This is pretty much what the React: Gaming series is, considering that it drops Question Time. Double for games such as Outlast and The Last of Us, where people do a whole playthrough.
  • Masochist's Meal: The Vs. Food episodes have dealt with some of the food in that article (such as Century Eggs), plenty of spicy food (they had to eat both whole peppers and things such as buffalo wings with progressively hotter sauce) and unsavory mixtures (e.g. the Pizza toppings challenge, where ham/alfredo sauce/egg/marshmallows/raspberries and goldfish candy/onion/peanut butter/pickles/tuna are the most edible ones...). Challenge Chalice takes it up to eleven, such as adding spicy food to already hot ramen, and making gross\sour\spicy smoothies.
  • Mêlée à Trois: The first ever Gaming with Teens head-to-head battle leads up to three teens throwing it down in Super Smash Bros.. This also happens in Mario Kart 64, Smash Bros. 4, Arms, and in Mario Kart 8, a four-way with the winner of the Elder tournament.
  • No-Sell: Everhet is the only teen unimpressed with Five Nights at Freddy's because he finds the gameplay boring. When he dies on the first night, instead of being freaked out by the jump-scared like all the other teens, he asks if that meant he won? The Elders as well generally had very subdued reactions to the game: a few of them did have fun with it, but the jump scares tended to make them laugh rather than cry out. When the Fine Bros. told them that some detractors believed that elderly people shouldn't play horror games for health reasons, they were alternately offended and baffled that anyone would think that was an issue.
    • Also, Ethan once he finishes the Fire Noodle Challenge ("That wasn't a challenge. It was literally breakfast for me!").
  • Not So Above It All: Elders playing GTAV. At first they struggle getting the grasp of the controls. Then they marvel at the graphics and the variety of activities they can do in the game. And then they realize they have weapons and Hilarity Ensues.
  • Pac Man Fever: In the first-ever Gaming with Elders (featuring Happy Wheels), Libby starts asking where the joystick is. Just think about that for a bit.
  • Previously on…: Subverted for multi-part gaming series by not only showing tiny snippets of video that fail completely to provide any context. Immediately followed by "This time, on..."
  • Rearrange the Song: The theme tune for the React channel is done in different styles for each show.
  • Running Gag:
    • Unintentionally, some sort of accident will befall Lucas in his appearances on Kids vs. Food, be it accidentally dropping the food (Tofu) or getting some of it on him (Squid ink pizza).
    • Sharon has several going on for her in Try Not To Eat Challenges.
      • Her tendancy to eat the food straight away before it's even described to them.
      • Also she puts them away into tupperware containers so she can take them back (sometimes licking or biting it on purpose so she can put it into a container).
  • Screams Like a Little Girl: We get more and more of these with all the Survival Horror games suggested. You know whose fault that is.
  • Sequelitis: Tom's in universe opinion on Five Nights at Freddy's as a series is this. While he enjoyed playing the first game because of its simplicity, he feels the sequels aren't as good.
  • Speak Ill of the Dead: During the gaming episode featuring Teens playing Michael Jackson's Moonwalker, quite a few made explicit jokes referring to the late singer's child molestation allegations and botched plastic surgery.
  • Spirited Competitor: Jasser during the Mortal Kombat Tournament. He quickly catches on to Sub Zero's moveset, allowing him to steamroll over everyone else. But then, he was also being humble about it, even giving his competitors pointers on how to play better.
  • Spit Take: A variant of the "Try to Watch This Without Laughing or Grinning" invokes this trope by having the participants do the challenge with water in their mouths.
  • Surprise Difficulty: Most Retro Gaming episodes have the Teens either shocked at how old games are Nintendo Hard (the co-op episodes on Battletoads and Contra are downright Comedic Sociopathy!), or struggling to overcome ones that are fairly easier (Sonic the Hedgehog has only three beating Green Hill Zone). invoked
  • Tastes Like Chicken: What multiple kids compared frog legs to in the corresponding Kids vs. Food episode. Likely justified because the legs were cooked similarly to fried chicken, so that was probably the first thing to come to mind as far as taste comparison.
  • Tastes Like Feet: Appears a lot in Kids vs. Food.
    • Samirah during "Kids vs. Salmiakki".
    Samirah: (on salmiakki) It tastes like I licked a tablecloth. Yes, I licked a tablecloth before, I was really little.
  • Tastes Like Purple: Kids vs. Food, inevitably.
    Derek (on caviar): "It tastes like sadness."
  • That Came Out Wrong: Said word for word by Tom at the beginning of " Adults vs. Food - Hot Wings Challenge (because he hadn't eaten lunch that day).
    Tom: I'm so hungry that I'm gonna swallow anything. *beat* That came out wrong.
    Jeannie: *completely loses it*
  • This Is Gonna Suck: Common reaction in Gaming episodes for horror games - double if it's an Oculus Rift title! Sometimes occurs in People Vs. Food too as the raw product is shown.
  • Versus Title: The People vs. Food episodes. The Gaming episodes featuring two or more generations competing against each other are also named like this.
  • Waxing Lyrical: This moment from Advice:
    Daenerys Targaryen: How do I become as fancy as Iggy Azalea?
    Troy: You can't become as fancy as Iggy Azalea, because... you already know... she's in the fast lane, from LA to Tokyo...
  • When Elders Attack: "Elders Gaming" with Grand Theft Auto V counts, kinda.
  • Wrong Genre Savvy: On "Kids vs Food—??????" the kids are shown a cake, and a few of them think there will be a cruel twist with what cake they get to eat, with one referencing how that happened on the Pizza episode. They're wrong; it's to celebrate the React channel's 1 year anniversary; the only "catch" is they have to eat it without utensils.

    React to That 
  • Adaptation Expansion/Adaptation Distillation: On the one hand, they leave out Question Time; on the other, they do a "Finish the Story" bit where the kids discuss the ramifications and fallout of the videos, and challenges where the kids get to mimic what was just shown (which in the FBE podcast was noted as an "OG Challenge Chalice"). Also the "Try Not to Laugh" challenge done a couple of times on YouTubers React is now Once an Episode (it eventually became a regular show with the Reactors).
  • Canon Immigrant: Only three reactors from this show would move on to the main shows: Reina, Becca, and Will.
  • Do Not Try This at Home: Opens every episode, along with "Don't send us your videos".
  • Imagine Spot: "Finish the Story" has one reactor imagining what happened after the video.
  • Lighter and Softer: While some of the teens are involved, they make sure to clean up the material a bit. Of course, it's no lighter and softer than the Kids React stuff.

Morgan: "Thanks for reading!"
Eric: "Let us know in the comments what we should check out next!"
Don: "If you liked this article, give it a big thumbs up!"
Royel: "An' you gotta subscwibe or the tropers will break into your kitchen and eat all your cookies."
Anthony Padilla: "And while you're at it, may as well subscribe to all of us."
Ian Hecox: "Especially the one with the two brunette guys. (not-at-all-subtle pointing) Right there. There. See that? That right there."
Vera: "To watch deleted reactions, click the box below."
Maksim: "Das vedanya!"
Lia: "Gimme a sec..." (staring into the monitor, clicking a few times) "No, later. (Beat) I'm just kidding, bye everybody!" (giggling, goes back to clicking)
(Fade to Black)

Alternative Title(s): Teens React, Kids React, Elders React, You Tubers React