1 definition by KeriBlog

1

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.

by KeriBlog March 20, 2012

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• © 1999-2021 Urban Dictionary ® • advertise • terms of service • privacy • dmca • bug report • help • blog • data subject request