They are two vine famous teenagers from Nebraska. They also have many good songs like "doing it right" and "flights". Jack Johnson and Jack gilinsky are also very hot.
by I love to turn up August 12, 2014
The Jack to Jack (Back to Back Jack) Is the attempt to masturbate immediately following a previous orgasm.
by CharitableNinja February 09, 2009
"Dave was going at it so hard last night all I could heard was jack-a-jack-a-jack-a-jack through the wall"
by Poon January 24, 2005
James: Hey bro, you doing anything this Saturday?
Julio: Probably gonna get baked and then Jack n' Jack.
Julio: Probably gonna get baked and then Jack n' Jack.
by SlapShaft February 05, 2017
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
Be careful with him. He's got a Jack-Jack personality
by moviedude March 10, 2008
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.
by wolfbait51 May 02, 2011
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.
by Chris Macky December 12, 2007