butt floss


Also found in: Dictionary, Thesaurus, Encyclopedia.

butt floss

slang A thong, a type of underwear or bikini bottom with a strip of fabric that goes between the buttocks (likened to dental floss between two teeth). How do people wear butt floss like that at the beach? It's so embarrassing! I could never wear butt floss—it's too uncomfortable.
See also: butt, floss

butt floss

verb
See also: butt, floss