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* AccidentalInnuendo: Calvin talking to the TV: "Shock and titillate me! I've got money!"
* AlternativeCharacterInterpretation: Calvin's general obliviousness to the world around him, intricate, vivid fantasies and general inability to comprehend the motivations of other people are all consistent with descriptions of autism (or schizophrenia.)
** Who or what exactly Hobbes is tends to be a subject of debate. Many fans still believe that he's a figment of Calvin's (possibly demented) imagination, in spite of Watterson outright saying that wasn't it (backed up by things Calvin couldn't have done himself, such as getting tied to a chair.) It probably doesn't help that by Watterson's own admission, the comic goes out of its way to not explain it while at the same time raising more questions.
** Calvin's mother can come off as harshly authoritarian at times. She rarely smiles at him, and has a knee-jerk reaction of trying to suppress whatever he's engaged in (granted, she often turns out to be right to do so,) while his father tends to be more lenient. When you consider that Calvin appears to have every standard symptom of ADHD and doesn't seem to be getting any treatment, this can have mildly abusive/neglectful overtones. Watterson himself lamented in one commentary that he regrets that the strip mostly shows her in a bad mood, since most of her appearances show her reacting to Calvin's latest misbehavior.
** Calvin, in his exuberant sled or wagon rides, frequently flies off what seem to be massive cliffs, falling heights likely to cause death or serious injury. Either CartoonPhysics are in charge, or the strip is an UnreliableNarrator and the cliffs shown are only his perception of smaller and less lethal cliffs. Similarly, his backyard may be less than the vast national park it seems to be, which would explain why his father treks the family hundreds of miles to go camping rather than do it out back.
*** In the story arc where he accidentally pushes his mom's car into a ditch, he reacts as if it was a cliff, indicating that he does exaggerate greatly, and his stunts are showing what he imagines around him, not what is actually there.
** A few fan interpretations of the infamous NoodleIncident are to be found floating around the internet. One of the most popular is that in this case, Calvin was actually ''innocent'' for once, and really was framed, as he claims.
* {{Anvilicious}}: Watterson's frequent broadsides against TV, advertising, comic books, deforestation, commercial culture, and humanity can get ham-fisted at times. He himself admitted to being too heavy-handed in an arc in which Calvin and Hobbes go to Mars to escape pollution, only to encounter a Martian who immediately flees (Hobbes:"Would you welcome in a dog that wasn't housebroken?") and realize that they have to take care of their own planet before going on to others.
* AmericansHateTingle: More like ''Everyone Outside the English-speaking World Does Not Understand Calvin and Hobbes'': While still beloved in its native [[UsefulNotes/TheUnitedStates U.S.]] as well as in UsefulNotes/{{Canada}}, and the [[UsefulNotes/{{Britain}} UK]], outside those countries it never reached the same popularity. Calvin is most often remembered abroad as ''[[WeirdAlEffect that (American) kid who pisses in the tyres]]''. The fact it doesn't have an animated adaptation due to his creator's strict policy about marketing doesn't help.
** In UsefulNotes/{{Brazil}}, at least, Calvin and Hobbes' books are regularly sold, translated into Brazilian Portuguese, in bookstores and newspaper stands. While the strip is not super famous, it is well known here. Unfortunately, so are the stupid stickers of Calvin pissing on things.
** In UsefulNotes/{{Portugal}}, it is also well known and cherished, especially for those who were young adults, teenagers and kids in the '90s (to the point that the newspaper, which was still in its infant years, was bought ''solely'' for the comic strip.) And most people don't know about the stickers, which is a good thing.
** It's quite known in UsefulNotes/{{France}}, getting some fanarts from renowned comic writers and is regularly republished. Pissing stickers are completely unknown.
* BreakoutCharacter: Watterson had no plans for Rosalyn beyond her initial story arc, but quickly realized the way she could completely intimidate Calvin, unlike any other character, offered a rich vein of material.
* [[DesignatedVillain Designated Villains]]: Calvin's parents, Miss Wormwood, Susie, Rosalyn all fall into this trope at different times, since they only react to Calvin's own shenanigans. Even Bill Watterson himself feels sympathy for Miss Wormwood, whose staid, boring teaching style is just about the least effective way to get through to a kid like Calvin.
* EnsembleDarkhorse: Calvin's Tracer Bullet alter-ego. Because of how long it took Watterson to draw the FilmNoir-style art, he only appears in two arcs comprised of six strips each in addition to his brief appearance in the haircut story, but he's as fondly remembered as Spaceman Spiff and Stupendous Man.
* FunnyAneurysmMoment:
** In one strip, Calvin pretends he's flying a fighter plane and ends up blowing up his school. Watterson apparently got a few angry letters when it was first published, but defended it by saying that ''any'' kid Calvin's age has probably dreamed about blowing up their school at least once. Now that school shootings have shown themselves to be all too real, there's little chance it would be published at all today.
** In another strip, Calvin draws a squadron of B-1's nuking New York in class. Since 9/11, there's little chance a strip like that would get the green light.
** Somewhat minor example -- one story arc has Calvin using his "Stupendous Man" costume and persona in an attempt to ace a history test ([[spoiler: he flunks]].) His mom, as punishment, takes away his costume. While she's done this before, given that this story arc is Stupendous Man's last appearance in the comics, it makes you wonder if said costume wasn't confiscated permanently.
** In an early strip, Calvin tells his mom he wants to be a radical terrorist when he grows up. Not so funny after three girls left Britain to join ISIS but disappeared.
** The arc where Calvin is carried away by a balloon isn't so [[StealthPun light-hearted]] ever since the Balloon Boy hoax.
* GatewaySeries: If you can find any comic after the '70s besides ''ComicStrip/{{Peanuts}}'' or ''ComicStrip/{{Garfield}}'' that has left more of a mark and gotten more people into newspaper comics, chances are it ''will'' be ''Calvin and Hobbes''.
* GermansLoveDavidHasselhoff: The strip quickly became popular in the UK and is still reprinted in some newspapers there to this day. The collections are also still sold in bookshops. Go in any branch of Waterstones' and you'll still find people buying them.
** Not only that, but when the 25th anniversary of the strip came round (in 2010), [[Creator/TheBBC BBC]] Radio 4 made a documentary celebrating the strip, hosted by ''Never Mind The Buzzcocks"' Phill Jupitus. In said documentary, people were interviewed buying the books in Waterstones and other bookshops, showing how beloved it is in the country.
** The strip remains enormously popular in Scandinavia to this day. In UsefulNotes/{{Norway}}, it had a monthly comic book lasting from 1989 to several years after the strip ended. The reprints are still selling well.
* GeniusBonus: From one strip where Calvin asks his mom if hamburgers are made from people in Hamburg. While that is obviously (and hopefully) not the case, hamburgers DID get their name from [[http://en.wikipedia.org/wiki/Hamburg Hamburg, Germany]].
** Lead characters named after Creator/JohnCalvin and Creator/ThomasHobbes also fits into this trope. Same with [[Literature/TheScrewtapeLetters Miss Wormwood]].
** In one strip, Hobbes claims "If you don't get a goodnight kiss, you get [[Creator/FranzKafka Kafka]] dreams." The rest of the strip is about the duo fighting off [[Literature/TheMetamorphosis an enormous bedbug]].
* GrowingTheBeard: [[WordOfGod According to the author]], the strip's world opened up after he wrote the "dying raccoon" story line and found that Calvin and Hobbes had more potential than he thought.
* HilariousInHindsight:
** In [[http://www.gocomics.com/calvinandhobbes/2013/07/21 this strip]], Calvin is trying on sunglasses in a supermarket. The pair he likes best looks like [[Anime/TengenToppaGurrenLagann Kamina's]]... Except green. With a little bit of [[http://31.media.tumblr.com/tumblr_m5u0reZY1c1rse6qgo1_500.jpg photoshop...]]
** In [[http://www.gocomics.com/calvinandhobbes/1991/01/23 this strip]], Calvin writes a message in the snow requesting pilots to [[VideoGame/StarFox do a barrel roll]].
** The {{script|fic}} styling of ''Fanfic/CalvinAndHobbesTheSeries'' makes one strip, which chronicled Calvin discussing how they could become cultural icons on television, much more amusing.
*** It's also amusing because they ''are'' cultural icons now, albeit not on television.
*** Likewise, a series involving Calvin using a piece of cardboard to pretend he's on TV ends up even more amusing -- particularly the one where Calvin [[ProductPlacement plugs his beloved]] ChocolateFrostedSugarBombs, in light of the fic's tendency to {{Product Place|ment}}.
*** What's more, a throwaway gag from one New Year's strip has Hobbes asking Calvin if his parents celebrate the new year. Calvin notes that their idea of a party is "mixing regular coffee in with the decaf." Then there's "New Year, New Disasters", which has ''Calvin'' invited to a New Year's party, while Calvin's parents [[DrowningMySorrows drown their sorrows]] in cider.
** [[http://www.gocomics.com/calvinandhobbes/1989/12/18 This strip]] following the controversy surrounding Creator/JamesFrey's ''Literature/AMillionLittlePieces''.
** May 12th, 1991: Calvin, disillusioned that the same generation that protested "The Man" has become "The Man" themselves, starts listening to easy-listen muzak to start his own protest. Did he just invent {{Vaporwave}}?
** In [[http://www.gocomics.com/calvinandhobbes/1986/05/24 this strip,]] Calvin imagines himself as a crocodile in the Amazon stalking a hippopotamus. Since the raid of Pablo Escobar's private zoo, a population of escaped hippos lives in UsefulNotes/{{Colombia}}.
** 20 years after Tyrannosaurs in F-14s, the first trailer for ''Film/JurassicWorld'' ends on Creator/ChrisPratt riding a motorcycle with a raptor pack in tow; fan reaction was pretty much divided between a Calvin reaction ("This is so cool!") and a Hobbes reaction ("This is so stupid!")
** [[http://i.imgur.com/PQoI18Q.jpg This strip]] has the "Calvinosaurus", a monstrous giant carnosaur who eats sauropods... Which happens to bear resemblance to [[http://en.wikipedia.org/wiki/Giganotosaurus a certain sauropod-hunting carnosaur discovered a few years later who is famous for usurping T. Rex in size]]. [[note]]Granted, ''Giganotosaurus'' is nowhere near as large as Calvinosaurus, not even that taller than ''Tyrannosaurus'' itself.[[/note]]
* JerkassWoobie: Let's not sugar coat it. If Calvin weren't a lazy, self-centered and a mild example of SmallNameBigEgo, he'd be a very sympathetic character. He gets beaten up constantly by Moe, Susie, and Hobbes, is a ButtMonkey overall, and is ignored by his parents. It's made very clear that Hobbes is his only friend. It's really easy to see why he's prone to {{Jerkass}} moments. It makes the tender moments he and Hobbes have together all the more touching.
* MisaimedFandom: Fans often debate whether Hobbes is "real" or "fake" (see the Headscratchers tab for examples.) Watterson carefully avoided making such a distinction and held that it defied the point of the strip.
-->''[Calvin & Hobbes] is more about the subjective nature of reality than it is about dolls coming to life...''
* MemeticMutation: [[http://i.imgur.com/RhKvFjs.jpg THIS THREAD IS NOW INCREDIBLY AWESOME]].
** [[https://triviahappy.com/articles/the-tasteless-history-of-the-peeing-calvin-decal The infamous Peeing Calvin decal]] that has appeared on the backs of pick up trucks in some variant since the mid 1990s onward. The design never actually appeared in the comic strips (It may have been copied and altered from a 1988 strip however), nor did creator Bill Watterson make it. It has it's origins in the mid-90s bootleg market, and has been a popular tasteless car decal ever since, though there have been many attempts to stop it from spreading. There are even religious and [[RuleSixtyThree female versions]] of the decal.
* OlderThanTheyThink: Watterson revealed in the 10th anniversary book that Spaceman Spiff is actually the first comic he tried to sell to newspapers, which had its origins in a very silly comic he wrote for a college German class. He quickly realized that Calvin's fantasies gave him the opportunity to actually use some of his ideas for Spiff, and occasionally give himself a break from writing Calvin and Hobbes.
* TheScrappy: Moe, an obnoxious and one-dimensional bully whose only purpose is to make Calvin's school life miserable. Calvin's creepy revenge fantasies against Susie and the other kids aren't justified. Against Moe, however...
* SomeAnvilsNeedToBeDropped:
** Few would argue that there were some {{Anvilicious}} strips, but some of those strips were speaking out for very worthy causes, such as improvements in education and (most often) environmental consciousness...
-->With no air, the people started to die.\\
'Help us! Please stop!' was the public outcry.\\
A hatch opened up and the aliens said:\\
'We're sorry to hear that you soon will be dead:\\
But though you may find this slightly macabre,\\
We prefer your extinction to the loss of our job.'
** Calvin's mom drops a serious anvil upon finding out that he locked Rosalyn out of the house.
-->'''Mom''': Calvin, listen closely. Locking Rosalyn out of the house wasn't just '''mean''', it was '''dangerous'''. If you'd hurt yourself or if there was a fire, she wouldn't have been able to help you.
* TheyWastedAPerfectlyGoodCharacter: Galaxoid and Nebular (the two aliens Calvin sells the planet to) would have been fun characters… unfortunately, they had to be introduced ''two months'' before the strip ended.
* ToyShip: Calvin and Susie. It's not really central to the ship -- primarily because Calvin's still at the 'girls are icky' stage of childhood -- but it is hinted at. A popular bit of {{Fanon}} is that Calvin and Susie end up getting married when they're older and having kids of their own.
* WhatDoYouMeanItsForKids: Despite being made mainly for kids in its early years, the strip now has just as much of a following with adults. Particularly in the later years, there were a ton of jokes that just wouldn't make sense to kids, and even a couple that implied jokes about sex and drugs.
* TheWoobie:
** Despite being capable of great {{Jerkass}}ery, Calvin can come across as quite sympathetic when he's getting picked on by Moe or when things are going badly for him.
** Susie tried to make friends with Calvin before she realized the futility of it, and was genuinely hurt by Calvin cruelly rejecting her time and again. This side of her is shown in a few cases, such as when her feelings are hurt by Calvin insulting her.
** The entire family were Woobies after their house was burgled, particularly how Calvin's father ponders that he always thought he would know what to do in a situation like this when he grew up, but nothing could have prepared him for this.
** Before he got PutOnABus, Uncle Max had this Woobie-worthy exchange:
-->'''Mom''': Didn't you ever have an imaginary friend?
-->'''Uncle Max''': Sometimes I think ''all'' my friends have been imaginary.
** Even Rosalyn has these moments whenever she puts up with Calvin's antics. For instance, it's hard not to sympathize with her in the arc where Calvin threatens to flush her science notes.
* {{Woolseyism}}:
** One Polish translation of the strip renamed it ''[[PunnyName Kelvin & Celsjusz]]'' [[labelnote:*]] Kelvin and Celsius [[/labelnote]], while the Finnish one renamed it ''Lassi ja Leevi'' after Lars Levi Læstadius. The Norwegian name of the strip is ''[[AddedAlliterativeAppeal Tommy og Tigern]]'' [[labelnote:*]]Tommy and the Tiger[[/labelnote]].
** In one strip, Calvin complains about "the lack of sex education" because the English language doesn't have grammatical genders. When it was translated into Norwegian, which ''has'' grammatical genders, Calvin complained about grammatical genders being politically incorrect.
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