A dance move involving swaying the hips from side to side while simultaneously moving the arms in the opposite direction and in front of and behind the hips. All my students are doing the floss now, and I still don't know how to do the Dougie.

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.

Another name for a thong, a type of underwear or bikini bottom with a strip of fabric that goes between the buttocks. How do people wear butt thongs like that at the beach? It's so embarrassing! I could never wear a butt thong—it's too uncomfortable.