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15.
An act in which a man engages in at least 13 coital engagements to ejaculation, all within a 24 hour period. Represents high achievement of male sexual stamina, much as a marathon is to a runner or as ballooning around the world is to rich white men.
Man: How was the trip to see your "girlfriend"?
Dude: Man, I tore her ass up! Made it a baker's dozen just so she wouldn't forget.
Man: Whatever, Dude. Doesn't count if you cranked them out by hand.
by Maj February 19, 2004