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1.
-v- To fornicate in a less than gentlemanly manner.
1. Dude, she got sizemored in that movie!
2. If you don't shut up, I'm gonna sizemore your mouth.
by eyeloveme September 08, 2005
49 27
 
2.
when a man finishes after one pump.
Matt really pulled a sizemore with that girl last night, and was she disappointed.
by MasterDrew April 15, 2008
26 23