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Made up by two idiots a few years ago, this word is offered as a response to something amazing, or something so completely awesome that you will automatically, and undoubtably, jizz inside your trousers. Or pants.
1: dude, the new Grand Theft Auto 5 gameplay looks jiztastical

2: man those yoga pants on her look jiztastical
by adefblackguy September 14, 2013
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