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-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
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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
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