jacknify

To steal or "jack" an object with a knife. Most commonly used to describe the stealing of another person's food.

"I'm about to jacknify me some ribs."

jacknify by Connekt June 30, 2008

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.

Jacknife by KeriBlog August 2, 2012

Jacknifing 

When a man has an orgasm while his penis is semi-erect.

"Man, I was so sexed-up last night - I started jacknifing the second she put her lips on my cock".

Jacknifing by Wobberino September 28, 2005

Jacknifing 

When a hammock is set up taller than it is wide.

Wow, that person is jacknifing in their hammock like no one's business.

I mean, I've seen people jacknifing at a 90 degree angle before, but that person is jacknifing at an impressive 20 degrees.

Jacknifing by katgumball May 23, 2016

jacknife 

a bad ass close to the same qualities of Jesse James and D.B. Cooper. Also has an extremely huge dick and is amazing in bed.

damn, that guy nicknamed jacknife kicks my ass!

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

jacknife by slappy bags February 4, 2010

Jacknifing 

when you bend a dog in half and stick your knob in its mouth while someone else does it in the poopchute with a strap on. This way you and the other person can rub rusty sherrifs badges.

I jacknifed my collie last night. I think he might of liked it.

Jacknifing by dangerous dave April 13, 2005