AssPiss is the act of dropping ones trousers (pants), tucking the scrodum and penis behind ones legs, and proceeding to pee backwards. Most frequently occurring at fraternity recruitment events.
Nick: "Hey guys!"
Crowd: "What?" (while turning to face Nick)
Nick: "AssPiss 2011, whewwww!"
Crowd: "What the fuck is wrong with that kid."
Crowd: "What?" (while turning to face Nick)
Nick: "AssPiss 2011, whewwww!"
Crowd: "What the fuck is wrong with that kid."
by WSUATOASSPISSER September 14, 2011
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