Top Definition
A very well-known Jackoffasaurus. Was believed to have single-handedly -well, we assume that he used both hands in actuality- to ejaculate the entire of the Jackoffasaurus species into existence. He was prominently displayed in an episode of the hit TV series, South Park, where he played a jackoffasaurus character, shedding light on the species for the first time.
Dude, that guy's been in the washroom for like 30 minutes. He must be trying to pull a Jaeki.

by hotgirl228 February 10, 2009

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