Men's Underwear

A common style among young men is to allow their trousers to sag below their waists, thus revealing the waistband or a greater portion of their boxer shorts. A woman wearing low-rise trousers which expose the upper rear portion of her thong underwear is said to display a "whale tail".
Not wearing undergarments
Not wearing underwear under one's outer clothing is known in American slang as freeballing for men or freebuffing for women; in addition, the term going commando is used for both sexes. People choose to forgo underwear for reasons of comfort, to enable their outer garments (particularly those which are form-fitting) to look more flattering, or because they find it sexually arousing. The practice is not without its risks, particularly for women, some of whom have been the victims of upskirt photographers.