Top Definition
1. Verb pronounced (moo-n Stamp) to put anus on someones forehead and let out a little squirt. Forever marking them with the name "Crescent Astronaut". The stamper receives the name "Captain Brown".
Boy 1: Jessica is a crescent astronaut.
Boy 2: Are you Captain Brown?
Boy 1: No, Joe is, he moon stamped that slut.
by Tim Eteller August 08, 2008
5 Words related to Moon Stamp

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