The often neccessary cleaning of the male rear; often performed with the aid of soap, shampoo, body wash, etc.
by King Shit January 16, 2003
the act of rubbing one's ass in the face of another, should be a surprise attack, and the receiver of the butt wash should have to struggle to get away and be left with a disgusting taste/smell remaining on their face
My roommate was sitting on the couch the other day, and I got up and gave him the biggest butt wash ever. I even left some shit on his upper lip.
by curbyourskeeter December 08, 2009
A bidet is a butt wash.
by mabhawaii May 25, 2007