Top definition
A sudden, sometimes dangerous, usually unexpected, eruption of jizz in your pants. Jizzquakes are rated at levels 1 through 5 depending on the severity. A level 5 is the equivalent to a national emergency.
Vicki eyed that sexy juicehead from across the room and experienced a level five jizzquake, now she needs to go home and change her pants.
by asseram September 05, 2010
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