- In Simon's "HOW TO MAKE A HORROR FILM" video, we see Vik (playing the dumb cheerleader) running from JJ, who is the killer. We see Vik approach two signs showing "DEATH" and "EXIT", and he chooses the "DEATH" path.
- A bunch of The Matrix references at the start of Simon's "ENTER THE MATRIX" Q&A.
- He starts the video by doing the Whip and Nae Nae to "Clubbed to Death".
- "Neo Simon" comes in and start shooting at him with a Nerf gun, causing Simon to re-enact the famous "bullet dodge".
- "Neo Simon" gives Simon the choice between a red pill (ends the video) or a blue pill (continues the video). Simon goes for blue.
- In the aforementioned "ENTER THE MATRIX" Q&A, Simon states that he got his Twitter hashtag ("warm water") from a gag on an episode of New Girl that he saw on a plane (the result of combining fire and ice).
- In this Trivial Pursuit video with Ethan, Simon, and Josh, Ethan ends up calling Simon Matilda based off of his dorky-looking young girl character.
- In another game of Pursuit, when Vik manages to correctly identify the South African flag, he proclaims, "THANK YOU, BASED GODS!"
- Ethan's online handle of Behzinga is a reference to Sheldon Cooper's famous "bazinga" punchline.
- In one Trivial Pursuit game, all of the Sidemen playing guess the same correct answer, leading Vik to say, "Flawless! I woke up like this.", which is a nod to the Beyoncé song "Flawless".
- At the 6:55 mark in this Skate 3 video, Simon starts singing 2 Unlimited's "Get Ready for This", famously used in films like Space Jam.
- In another Skate video, Ethan starts chanting the lyrics to Limp Bizkit's "Rollin" as his character is perpetually doing flips and jumping through the air.
- While doing a fairly intense game of FIFA 15 with KeanuBoss, Harry states that his hands are sweaty, but then goes on to add "knees weak, arms are heavy".
- As Josh gets out of his car high in the air at the wind farm in GTA Online as he could not hit Ethan on a platform, a blade from the wind turbine hits him and he gets knocked higher into the air. He laughs and says, "I'm flying! Ha-ha-ha-ha-ha! I'm falling with style!"
Josh: I'm just fucking falling!
- This reference is reused in this video on a level with a deliberately rugged terrain to make driving cumbersome.
Vik: With style.
Josh: I'm not flying, I'm falling with style.
- Vik's video of Geoguessr with JJ has JJ quoting the famous chorus to Linkin Park's "In the End".Vik: We tried so hard.
JJ: And got so far. But in the end, it doesn't even matter.
- JJ's Running Gag of shouting "MATT DAMON!" comes from Team America: World Police.
- In Josh's "RACING ON WATER" GTA V video, he randomly began singing "One More Time" by Daft Punk when Vik said that he needed to get past to JJ one more time.
Shout Out / Sidemen