Totally nude: butt naked running through the boys' locker room
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Examples from the Web for butt naked
Contemporary Examples
The things that were said were deeper than having a guy in my bedroom, in my house, with my wife, butt naked.
