Why can't I wear underwear at the swimming pool/beach? I mean, all kinds of swimsuits have the same function as underwear to cover some parts of the human body. - Quora

Did you think it is possible to swim with underwear on, or does it

Should one wear underwear underneath their swimsuit? - Quora

Model Proves That A Size Small And 3X Can Rock The Same Swimsuit

Can you wear underwear in your own swimming pool? - Quora

Can a swimsuit function as underwear? - Quora

Should one wear underwear underneath their swimsuit? - Quora

Is it inappropriate to wear only underwear when swimming? - Quora

Do Swimmers Wear Underwear Under Swimsuits? And Why You Never

Did you think it is possible to swim with underwear on, or does it

Everything You've Heard About Chastity Belts Is a Lie - Atlas Obscura