Jacknife


when you burst out laughing, so hard and so suddenly, you involuntarily fold in half at the waist. usually accomponied by a large exhale of breath.
it was hilarious, and when he hit the punch line, i jacknifed.
a bad -ss close to the same qualities of jesse james and d.b. cooper. also has an extremely huge d-ck and is amazing in bed.
d-mn, that guy nicknamed jacknife kicks my -ss!

yeah i know, he banged my girlfriend then dumped me cause apparently he f-cks her better.

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