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1.
noun used by Steven Stifler from American Pie 1 & 2, and American Wedding. It's similiar to a person who likes gapage (anal sex) or anything inserted into their rectum.
"Happy Fuck Day, Assmo!" - Stifler
by Becka Contreras June 22, 2004
 
2.
An invader of a bovine anal cavity.
"Man Eli your such a assmo"
by Tim Cordova February 10, 2004
 
3.
someone who likes things insertded into there ractom or another name for deushbag, basically.
That guy is such an assmo
by Derock May 29, 2004
 
4.
n. A person who inserts foriegne objects into a cows anal cavity.

v. Using force to give a cow anal pleasure.
n. "You are such an assmo Eric"

v. "Did you try to assmo him John"
by Scott Tyler February 12, 2004