History Main / BareBottomedMonkey

** Most of the cast have this trait, though it isn't usually drawn attention to. It ''is'' brought up in ''Touch & Roll'' via the title screen, which has [=AiAi=] ShakingTheRump at the player and prompting them to touch his behind to proceed to the rest of the game.

** ''Whose Bum? At the Zoo'' has an orangutan's rump as one of the featured bums, and the book both shows and describes it as being bare.

* In ''Literature/JourneyToTheWest'' the Buddha explains to Sun Wukong that he is one of the four celestial monkeys, who exist outside the ten classifications of life, which includes the Red-Buttocked Horse Monkey. Said monkey has knowledge of yin and yang, human affairs, and how to avoid death.

* Referenced in an old ad bumper for Creator/ComedyCentral featuring the network president --dressed as a clown-- boasting that only his channel could be relied on for humor:
--> "I mean, look at the competition: CNN, not funny. C-SPAN, not funny. The Discovery Channel... ''*starts to chuckle*'' Well, those baboons with the red asses, they are kinda funny! But then again, how often do you see those things?"

** Similarly, the Japanese folktale ''[[https://en.wikipedia.org/wiki/The_Crab_and_the_Monkey The Crab and the Monkey]]'' has some versions that explain this trait of monkeys. According to one, the monkey's bottom became bare & red after being [[RumpRoast burnt by a flaming chestnut]] and stung by a bee, while another has the monkey's behind being shaved clean and pinched by the crab.

* Saru Brother, the Blue Ranger in ''Series/AvataroSentaiDonbrothers'', is themed after a Japanese macaque and has a red patch on the butt of his Ranger suit for no real reason except this trope.

* Discussed in one issue of ''Franchise/SpiderMan''. Spidey, having just caught Mandrill, jokes that he'd be more intimidating if he flashed his red butt at people. Mandrill scoffs at the insinuation, not just for being captured and mocked, but because [[ArsonMurderAndJaywalking his butt is]] ''[[ArsonMurderAndJaywalking orange]]'', not red.

* ''VideoGame/MegaManX'': Among all the multicolored lights adorning Spark Mandrill's body, a large blue one right on his backside homages the animal he's based on.

This is TruthInTelevision for some primates, namely Old World monkeys (such as baboons, macaques, and mangabeys), gibbons, and certain subspecies of chimps. The hairless part is due to an anatomical adaptation known as [[https://en.wikipedia.org/wiki/Callosity#Primates ischial callosities]]. In real life, this adaptation exists to provide comfort and stability while sitting, especially in trees where maintaining balance is crucial. The distinct colors, which only some species exhibit, vary in purpose depending on species; for baboons, it's a trait mostly exhibited by females in estrus, whereas with mandrills it's primarily a marker for dominance and social hierarchy. Displaying of the rump is a behavior done either to convey submission or propose mating. Expect these aspects of the trait to be overlooked in most media depictions, however, in favor of simply portraying it out of context as a primate's humorous quirk -- because [[ToiletHumor butts are funny]], after all.