An asstoo is a tattoo that someone gets on their rear end. It is much like a tramp stamp but on the ass.
by hannahhairplane February 9, 2010
Get the asstoo mug.by Joe Kicks Your Ass June 28, 2006
Get the asstoo mug.Hey Wes, you got to sit down for this. We got drunk at the rugby game and ended up getting asstoo's.
by ALexfromradford October 5, 2009
Get the asstoo mug.by pv123 July 20, 2008
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