A tight, plain one-piece swimsuit with that classic gym-class vibe shows up a lot, usually in dark colors with a little name patch on the chest. Artists lean into the clingy fabric, wet shine, and how it hugs tits and ass while an adult character gets stripped, groped, or fucked without ever taking it fully off. It often pairs with poolside or locker-room setups and a slightly embarrassing, “caught in uniform” kind of heat.