Adventure Time has a lot of talk about relationships and mild-to-moderate sexual innuendo.
Characters kiss on the mouth, on the cheek or (rarely) with tongue.
Butts are seen throughout the series.
Some characters position themselves and speak sexily sometimes.
Women in bikini is seen sometimes.
Finn had a crush on Bubblegum.
In the episode "What Is Life?" a brief scene shows the Ice King (a character that liked kidnapping princesses) reading what appears to be a nudie magazine on his bed. There are also heavy undertones of procreation in this episode, including claims that the Ice King's lightning bolts made him the "father" of a robot they revived.
In "Burning Low" Jake explains to Finn the "15 Tiers" of a relationship by saying: "Bro, you gotta let things take their natural path. Look, look, let me explain some junk about dating. Right now, you're at Tier 1, which is hugging. But pretty soon, you'll be at Tier 2, which is smooching. Then down the road, you'll make it to Tier 5, where she'll let you discover all fifteen feet of her loong, beautiful stomach. Then after awhile, you'll make it to Tier 8, where you touch her horn for the very first time. Very special." Finn asks "What about Tier 15?" and Jake gets mad and shouts "You stay away from that! Do not do Tier 15!".
In one episode, Finn's clothes are incinerated off of him (we see his butt for an extended time). A character comes over and tells him, "Hey naked kid".
We see Finn in his underwear in one episode (they were torn off and stolen by a girl; the scene is comedic, not sexual).
Some characters put spaghetti on another's mouth in some episodes; this is somewhat suggestive.
In one episode, Finn and two other people are naked with logs covering their crotch. The log moves up and down as the characters walks or move. The original design had beavers instead of logs, but this was changed due to CN censorship.
In one episode, Cake increases in size and explicitly shakes his giant butt.
In one episode, Finn sees a female getting into a shower and gets flustered, however nothing is seen.
Jake made a "special" video for his girlfriend Lady Rainicorn as seen in "The Pit". In one episode, she's pregnant, and in another episode we see their five children.
Finn and Jake play to put the finger in things in one episode. Even BMO does a suggestive gesture while wanting to "stick their fingers into 'these holes'", refeering to the controllers.
In the episode "Blood Under the Skin", Finn crosses the Swamp of Embarrassment, where there are a lot of curtains with a lot of people having a shower and with their parts covered (some offscreen). Finn is called a pervert and he repeats that he is not, and a man says "My most private parts seen by a boy!" and "my privates!", that are said twice in that episode. At the end he comes completely embarrassed with a red face.
The episode "All the Little People" is full of suggestive content; this includes Finn investigating about how the little people interact with others. This episode was banned in CN Latin America.
Finn tells Mrs. Cow to take the paper bag off her udder. A blue bird and Mrs. Cow take the paper bag off her udder, but it's actually revealed to be an udder with a face on it.
Lady Rainicorn and Jake is set-up for "seven minutes in heaven" by Finn. He places them inside a closet.
In the episode "Breezy" there are a few innuendos which include the implication of LSP made it with Finn (she says things like "I know all about your dirty deeds" or "I didn't wait infinity for a dip in the kiddie pool! We're taking this to the deep end!") or Breezy calling herself "a virgin queen bee".
On the gender-switched episode, Prince Gumball takes Fionna to his bedroom, which showed rose petals on the bed, and he was about to remove his shirt, but it was actually the Ice Queen taking off her cover and wanting to destroy her.
Ricardio the Heart Man threatens to cut out Bubblegum's heart and make out with it. He is also an implied rapist.
In an episode a book called "butt stuff" appears quickly on-screen.
It's rumored throughout the series that Jake has a foot fetish.
In the Tree Fort where Finn and Jake live, can be seen on a wall a ripped image of an apparently naked woman. However, according to a crew member of the show, it represents "a woman in a crappy snapped bikini".
The creator of the show, about a character's design: "Marceline's dad, when he turned into a giant monster, we had a bunch of notes about it, that it was too vagina-like. We had to change the shape of it and then they said it looked too much like a penis."
Some lines of the show includes: "I'm helping you by tempting this guy with... my body... ", "Ice King is the hottest hottie!", "Okay, but I'm gonna kick your butt. Not that I'm thinking of butts...", "Oh my glob, you're touching my woman body!", "Only good babies get sassages.", "My body isn't hot anymore!", "Or... maybe they kissed so much they passed out!", "Why do my parts hurt?", "I think I heard the word "virile" in there" or "I missed you at nights.". Worth mentioning that some of the sentences are said by "thematic" characters.
A song contains these lyrics: "I'm busy, makin' babies, greasy babies, sliding on my gravies". Another contains these: "Shake your extremities / (...) All your arms and knees / I want 'em, shake 'em, baby, please / Baby, shake your eyes for me. / (...) Quack me up with some yokes / I like girls who know the ropes..." Other songs include "I can introduce your parts to something new" or "Oh key, we're meant to be - I want to have your baby...".
This animated series contains moderated fantasy violence, as well as some gore and graphic scenes.
Punches, kicks, and swordfights, but all very cartoonish. Sometimes there is blood and "red" cuts.
The series mainly take place in a post-apocalyptic world. The opening has a decapitated arm inside a hollow tree. Very fast, can't be seen without pausing.
Finn kills a monster shaped as a heart, red blood sprouts all over. Very brief and the blood have not stained anything.
In a few episodes we see bruises and scratches, but no blood.
Some decapitation of small parts (noses and hands), or limb removal, mauling (i.e. arms chopped off) throughout the series, but no blood, only flesh wounds.
Several fight scenes are played out for humor. For example, there is a character named Ash, who everyone hates, since he is a douche. Marceline kicks his crotch and Finn starts beating him up with her. Finally Jake stomps him with his giant foot. Even the Ice King (Simon Petrikov) in one episode punches him with no good reason.
Finn and Jake start beating up each other, because they are proving themselves who is more resilient. Both of them have lots of nasty looking bruises, cuts and some blood.
The Magic Man turns a bird inside out making it show the birds guts, flesh and everything else. He also turned Finn into a giant foot, used magic to sew some Martians hands together and turned the Martians drinking water into hair (which they drank!).
Some scatological humor, including visible green vomit in some episodes, when the characters are disgusted. Jake explicitly vomits into a jacuzzi after hearing how his wish can destroy and kill many people. Some spitting and farting also.
A pale skinned, creepy looking woman in a TV eats her own hair. She gags a lot, and is all the time ready to vomit. Jake and Finn are absolutely disgusted.
Finn has a rash on his leg in one episode. Some kind of disgusting pink liquid/puss drips from it.
Skeletons are seen in some episodes also, walking skeleton get smashed. Some characters practice necromancy.
In one episode Ice King stole parts of other princesses bodies and made a monster out of them. Princess Bubblegum got half her face torn-off to set an example.
A demon gets half his body torn off by a laser. All his insides show, and a lot of blood.
A demon starts vomiting bananas and another one gets his head turned into abdominal muscles.
When Hunson Abadeer (The lord of evil), appears from The Nightosphere (Hell), he reconstructs himself to the real world in a gory manner. All his organs, blood and skin stick together, and create him in a brief (half a second) scene.
Castle Lemongrab has rooms filled with guts, a room with a giant heart and a room with a monster that peels it's skin off to reveal it's skull.
The Lich has skin peeling off his ancient, rotten flesh and what seems to be veins hanging from his arms. He looks very disturbing indeed.
Finn presumably "kills" the Lich by shoving a sweater inside his (the Lich's) eye socket, and proceeds to pull through the other socket so that the sweater comes out between the sockets. And it does, breaking the Lich's skull.
The original title card for the episode "The Enchiridion!" showed Finn in a dark place holding Jake down on a table with a dagger stabbing him, with a lot of blood and Jake's guts being showed in a very gory style and his eye socket completely mutilated, but Cartoon Network found that image too scary. Subsequently, three versions of the title card were made. The final title card had several changes to be less scary.
Goliad squashes an innocent bee.
A demon sucks up almost all of Jake's blood. The blood is shown. A sword is made out of a demon's blood.
In an episode a rat appears on scene and grabs a pie, then Lemongrab punches it and kills it and he starts to eat that pie from its mouth.
We see the eyes (with their roots) from a man, and they're put on and extracted at some points of an episode.
Some scenes from the miniseries "Stakes" include fingers briefly burning from the sun, a neck being pierced, a stake coming from the skin, animals dying and a character sucking blood from a horse.
In the episode titled "The Jiggler" a creature that Finn and Jake take home becomes violently ill and spews what appears to be blood or vomit out of many orifices of its body. In an effort to stop the leakage, Finn and Jake plug up the holes, only to have the creature expand and eventually burst. Jake and Finn are covered in twisted strands of the creature's body as Jake remarks "Our pet exploded".
Sometimes there are violence references. For example: "...where that round of the arm bone meets that weird flat bone on the top of the back gonna pull that until it comes off", "Over the mountain, the ominous cloud coming to cover the land in a shroud, hide in a bushel, a basement, a cave, but when cloud comes a-huntin', no one's a save... no, safe!", "I wanna suck out your eyeballs and rip out your throat" or "I'm going to unzip your skin and wear you like a little coat."
On-screen deaths are seen sometimes (for example, in one episode, a character dies and turns into ash (he is brought back to life in a later episode though)). The episode "Too Old" depict extremely graphic cannibalism, and on-screen murder. Some episodes have relatively hidden themes such as assassination ("Jake vs. Me-Mow") and suicide plots ("Princess Cookie").
The language is tame. Words such as "Oh my glob!" are used. Words like "Heck", "Dang", "Jerk", "What the-" are used frequently. Words like "freaking", "flipping", "fudge" or even "son of a-" are sometimes used. Characters often use "bleep-bloop", "bullstuff", "what the blood" or something like that to censor themselves.
Crap was used in "Rainy Day Daydream".
Other words like "Turd" have been used.
In one episode a worm rises up behind a statues fist. It looks like the statue is giving the middle finger, and Treetrunks gets offended by it.
Nothing in particular. Ice King sees magical creatures and spirits with his "wizard eyes". Some references to smoking and drinking. Princess Bubblegum pours herself a glass of what appears to be alcohol in one episode. A character is named Root Beer Guy and his head has the shape of a beer mug. In one episode a character is seen smoking a bubble pipe. An hallucinogen is mentioned briefly in one episode.
Normally a cartoon that is not scary but at times Adventure Time can be very intense, propitiated by its detail-oriented animation style. The characters and their facial expressions, the backgrounds and the scenes can be creepy, specially to children; see also the "Violence & Gore" section. Not to count that the show has a dark tone overall.
A murder episode where a jelly filled bun is killed. A scene where Finn finds him is very disturbing, with the murdered guy smuttered all over the closet. He gets really shocked. But it was just an illusion.
Lemongrab eats Lemongrab 2 once and is next time seen with a chunk of his face bit off and he has no torso. Lemongrab 2 is eaten again and is seen again inside the stomach of Fat Lemongrab with a larger chunk of his face bit off.
The Nightosphere is essentially hell. The creator himself even referred to it as "one of the coolest depictions of Hell on TV."
Finn was abandoned as a baby, and at first he doesn't knew who are their biological parents.
Any episode involving The Lich can be intense.
This is a very surreal show, so anything flies really.
It should be noted that on non-US airings of this show on TV, the episodes have been very heavily censored and cut. For example, in UK and Australian airings, almost every episode has had several edits made to it. Sometimes entire segments have been cut, or even banned (but it's very rare).
Official description to Australia's PG rating for Season 1-5 Boxset: Themes, crude humour, animated violence and coarse language.
Suitable for mature kids (10+/11+); PG, sometimes 12.