Are you supposed to wear underwear under men's swim trunks? If so

What is the best men's underwear for humid weather? - Quora

How to stop my dick outline from showing when I leave the pool in swim trunks - Quora

When did you start wearing swim briefs? - Quora

Who wears underwear as swimwear? - Quora

Do people wear underwear for swimwear? - Quora

What are your thoughts on men's swimming trunks, such as board shorts, in terms of style and comfort? - Quora

Brazil: Do Brazilian men usually use swimming trunks or briefs (in Portuguese, sunga) at the beach? - Quora

Can swim trunks be used as underwear? - Quora

Are you supposed to wear underwear under men's swim trunks? If so, which type? - Quora

How to stop my dick outline from showing when I leave the pool in swim trunks - Quora

Is it inappropriate for men to wear swim briefs at the beach? - Quora

Can I wear men underwear on my period (I'm a girl) because I heard it has more space and it's more comfortable? Should I? - Quora

Is it acceptable for Indian Men to wear brief underwear for swimming at resorts, hotels or any public pools? - Quora

Can a man wear spandex briefs, shorts, or square leg shorts? - Quora