Jackflip

verb: To perform a backflip while masturbating

OR

noun: A backflip performed while masturbating.
Harrison: OMG Jamie just double jackflipped!!

Astonished Onlooker: WOW! That's two jackflips in a row! Jamie's hella cool!
by hbhbhbhbhbhb November 09, 2011
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