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 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.

When you get up, "Jack Jack".

Jack Jack by Chris Macky January 4, 2008

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

Jack Jack 

To shit your pants.

What’s that smell? Did you pull a Jack Jack?

Jack Jack by Assmonkey222 November 24, 2021

Jack jack 

a sneaky little person that works at cybercamps, and is constantly bugging owen about him being an LIT. he wears a stuipd pink ballon around his head, which has headlice.

jack jack is annoying

Jack jack by odubcybercamps August 4, 2009

jack jack 

A person that is addicted to starbucks and/or usually calls great people "chu chu"

Someone:That person is so jack jack

jack jack by asdfasdfasdf September 24, 2008

Jack jack 

The name of the baby in that one movie called the incredible s????????

And also a absolute gem in bikeathon ya dig

Omg who grabbed jack jack?

Jack jack by Jacobrussel January 14, 2020