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The often neccessary cleaning of the male rear; often performed with the aid of soap, shampoo, body wash, etc.
I need to do the pre-date butt wash in case Lucy decides to go down on me.
by King Shit January 16, 2003
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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
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like butt-face, butt-head, etc..
That's not the Eiffel tower, buttwash, we're in Tokyo!!
by J-style June 03, 2005
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