Top definition
Refers to a womans thong that is normally one size too small.
Woah! You have got some serious butt flosser action going on.
by Craig & Will November 20, 2007
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug