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noun: the process of a man jamming a female while on a lofted bed (perhaps in a college dorm room), during which the man pulls his member out of the females vajayjay, lifting up his head and nailing it on the ceiling, thus knocking himself out and falling face first into a puddle of cum on his lady's belly.
King Ginger was rockin' "Pinch Pinch" when he decided he didn't want Baby Ginger and pulled out too quickly, dome-crushing himself into a "college knockout" and falling into a pile of ginger juice.
by Tonbone, Tom O'D, Slam November 15, 2007
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