History Main / UnderwearSwimsuit

* ''Literature/HneryAndMudge'': Henry, his father and his grandfathers do this in Henry And The Great Grandpas.

* ''VisualNovel/{{Morenatsu}}'': Happens twice in Tatsuki's route. First Tatsuki swims in his [[Fundoshi]] during a swimming competition and later on everyone ends up swimming in their underwear during a camping trip.

* ''Film/{{Domino}}'': During a pool party, everyone wears swimsuits except for Choco, who goes in his briefs.

* ''Series/{{Yellowjackets}}'': In the 1996 timeline, an elite high school soccer team is flying out to a national competition but their plane crashes and the survivors are stranded in the wilderness. In Episode "The Dollhouse", after three days of waiting to be rescued, they hike away from the crash site in hopes of reaching the lake one of them saw. When they indeed find it, most of them strip to their underwear and jump in. We see them frolicking in the water and enjoying themselves in a little respite from their situation.

* ''Series/Yellowjackets'': In the 1996 timeline, an elite high school soccer team is flying out to a national competition but their plane crashes and the survivors are stranded in the wilderness. In Episode "The Dollhouse", after three days of waiting to be rescued, they hike toward a lake. When they reach it, almost all of them strip to their underwear and jump in. They can be seen splashing each other and having a moment of fun in the middle of their trouble.

* ''WesternAnimation/JohnnyTest'': In "Johnny, 90210" Johnny briefly swims in his underwear while in Porklifornia.

* ''WesternAnimation/JohnnyTest'': In Johnny, 90210 Johnny briefly swims in his underwear while in Porklifornia.

[[folder:Visual Novels]]
* ''VisualNovel/ExtracurricularActivities'': Early on in the Darius route he'll invite you to swim at a secluded cliff area. He'll strip and invite you to join. Considering [[DatingSim what type of game this is]] it's abundantly clear why you two are there.
[[/folder]]

* ''WesternAnimation/TheLittleMermaidIIReturnToTheSea'': Ariel's daughter Melody often sneaks out of the castle to swim and pick seashells, clad [[ModestRoyalty in her underclothes]] comprising of a white camisole with a small green bow in the centre and a pair of white pantalettes. That being said, this film takes place at a time in which swimsuits weren't invented yet.

* ''WesternAnimation/TheLittleMermaidIIReturnToTheSea'': Ariel's daughter Melody often sneaks out of the castle to swim, clad in her ModestRoyalty attire, specifically, her underclothes comprising of a white camisole with a small green bow in the centre and a pair of white pantalettes. That being said, this film takes place at a time in which swimsuits weren't invented yet.

* ''WesternAnimation/TheLittleMermaidIIReturnToTheSea'': Ariel's daughter Melody often sneaks out of the castle to swim, clad in her ModestRoyalty attire, specifically, her underclothes comprising of a white camisole and white pantalettes. That being said, this film takes place at a time in which swimsuits weren't invented yet.

* ''WesternAnimation/TheLittleMermaid2ReturnToTheSea'': Ariel's daughter Melody often sneaks out of the castle to swim, clad in her ModestRoyalty attire, specifically, her underclothes comprising of a white camisole and white pantalettes. That being said, this film takes place at a time in which swimsuits weren't invented yet.

* ''Anime/DragonBallZ'': In the season 4 episode "The Heavens Tremble", Gohan strips to his underwear to catch a fish in the river. Then Krillin and his new girlfriend Maron drop by. While Gohan doesn't mind them seeing him like this, it does earn him a remark from Maron who wonders if he always hangs around in his underwear.

* ''[[Creator/RobertWestall The Wind Eye]]'': Beth needs to take to the water; not having brought a swimsuit, she has to swim in her underwear. Unfortunately it's not up to the job and slips off, leaving her naked. This means she gets mistaken for a succubus in the seventh century, and then arrested for indecent exposure when she returns to the present day.

* ''Buttons McGinty'': In one book, Buttons goes swimming in the ocean after arriving in another dimension. However, he has no trunks, so he swims in his underwear, hoping everyone will think they're trunks.

* ''Series/{{Outlander}}'': A reversal of the usual aesthetic happens in the series 1 episode "Lallybroch". Attempting to clear a blockage underneath the mill's waterwheel, Jamie Fraser removes everything but his linen undershirt and goes for a dip (apparently underdrawers or Long Johns weren't a priority for men in 18th-century Scotland- that's kilts for ya).

* ''Film/PiratesOfTheCaribbeanDeadMenTellNoTales'': Her frustration with the incompetent men around her reaching its peak, Karina unashamedly removes most of her outer clothing (too much according to Henry Turner and not enough according to our old boy Captain Jack Sparrow) and jumps off the boat to reach shore faster.

* ''[[https://www.youtube.com/watch?v=GrIJ26uET0A Coke light... have a great break]]'': An impromptu dip by a handsome priest finds a woman observing his reverse-striptease before realizing the truth and embassingly accepting his blessing of forgiveness.

* ''Captain Morgan's "To Life, Love & Loot"'': Apparently a showdown between two 17th-century gunships can be averted by the eponymous captain [[https://www.youtube.com/watch?v=AKnC3exDPxY stripping down to his underdrawers and doing a 720 off the plank]].
* ''Coke light... have a great break'': [[https://www.youtube.com/watch?v=GrIJ26uET0A An impromptu dip by a handsome priest]] finds a woman observing his reverse-striptease before realizing the truth and embassingly accepting his blessing of forgiveness.