In a one-piece suit, how does one use the restroom? There are only two options available to women here: rip off the entire thing or hold the crotch portion aside while performing your duties. Ladies obviously can't do that if they have to go to the bathroom, so the only alternative is to rip the whole thing off. Women must do what is comfortable for them, similar to what guys do beneath their swimsuits. Why Are Bathing Suits Called Swimsuits? Women wore condensed clothes to wash and play at the seashore from ancient times until about the 1800s. In ancient Rome, only the bathhouses permitted nudity. On beaches, the neighboring nations divided their populations into male and female.