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jack-jack 

Person who is kind & wholesome until pushed over the line. Reference to baby JackJack from "The Incredibles" Movie.
Don't keep pushing him. He's going to go Jack-Jack.

Be careful with him. He's got a Jack-Jack personality
jack-jack by moviedude March 9, 2008

jack jacked 

When a guy is jacking off and is interrupted by a second individual who "lends a hand" and finishes the job.Ideally,the interloper could be the wife,girlfriend,a hot maid,or cute neighbor girl. Strangely,the good samaritan could be a sister,grandma,brother or roommate.
I was choking the chicken when my sister's hot friend barged in the bathroom and jack jacked me.
jack jacked by wolfbait51 May 24, 2011

Jack Jack 

When one leaves his seat and calls jack jack which ultimately reserves that seat for him when he returns. Jack Jack was created long before Tap Tap and Jack Jack actually over rides all claims to tap tap. Originated in the city of Gig Harbor which was founded way before Tacoma.
Jack Jack by Chris Macky January 4, 2008

Jicky Jack 

Jicky Jack is the process of turning a simple task in to multiple steps. When something becomes jammed and stuck, then you must use your Jicky Jacking skills to massage said task in to it's proper dwelling. To be a thorough Jicky Jacker you must posess a BIG HEART. It takes talent, patience, and above all, a rough hangover
When Bob found that there was no height to install the panel, he started revving the forklift engine and doing dangerous stuff to make sure that he could Jicky Jack that panel in to place.
Jicky Jack by BBlanc March 6, 2009

Jack jack off off 

When numerous persons with the name of Jack gather and compete over who can pleasure themselves the best, most efficiently, or fastest. Any other competition parameter works under this term, but it must pertain to multiple Jacks masturbating.
"Hey homie, did you attend the Jack jack off off last night?"

"Yeah man! Jack was on fire, but other Jack finished in record time. I couldn't believe my eyes!"

jack jack 

a dude who is always lifting big things.

when alcohol becomes involved don't go near bro, he will fight u

loves a romp
claims an amateur mui tai fighter would beat Mike Tyson
damn bro is at the gym, he is a total jack jack !!
jack jack by kinglegend69 August 23, 2022