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to get a ride in the trunk of someone elses car, thereby ninjaing your way somewhere else. Done preferably in a van or SUV.
Dude 1: Dude, i had to get a ride from Jenny yesterday but she doesnt have her year, so i had to trunkninja.
Dude 2: Noice
by shooooooooooooooooo!!!!!!!!!! September 06, 2008
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