Wearing absolutely nothing at all. No clothing what so ever.
When I walked in the bedroom the girl was butt ass naked.
by Gorillaboots August 19, 2006
1 more definition
When you're butt naked in a place or situation where you shouldn't be, you're butt ass naked.
Holy fuck, that clown is butt ass naked.
by Sultanofsurreal February 10, 2010