Jack Back

He's basically David Guetta in a nickname

Dude: Do you listen to Jack Back
Another Dude: Who the fekfkekkf is that?

Dude: Bro it's David Guetta!

Another Dude: OOOOOOOOOOHHHHHHH!!!

by MidTRahX_303 May 15, 2023

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Jack's back

A term used to signify the return of 24, featuring the legend that is Jack Bauer.

Person 1 : "Are you excited about the start of season 5 tonight?"

Person 2 : "Oooooh yeah, Jack's back baby, Jack's back..."

by Ali JTB October 11, 2005

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throw back jack

To pleasure onses self to old pictures of celebrities/porn stars who are currently past there prime.

"She may be ugly now, but I keep some of her old pictures from the 90s for a throw back jack"

by scram.bler January 20, 2015

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1. Basically, a kid posing as a bamf who stands behind his/her crew and is afraid to take real action in a fight.
2. Someone who claims they can kick ass, and they chicken out when someone wants to go.

James: I saw Jason behind those punks fighting after-school today. What a whimp.
Rob: I know, such a jack in the back.

by baddefinintionperson May 28, 2009

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Finger jack from the back

The act of finger penetration to either the vagina or anus, while from behind. This can be accomplished standing, sitting, bent-over, or preferably while she's asleep with her back to you.

While my girl is blowing me in my lap, I like to finger jack from the back to pass the time. Then I cram my fingers up both of her nostrils so that she can smell her dirty ass all day long.

by Finger Maniac March 18, 2011

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Double Back Jimmy Jack

This is one of the most difficult sexual positions and it's approved by Dr. Falchi as "corona safe" you are back to back doing it - you have to be very flexible.

We did the double back jimmy jack last night and my legs are killing me, I need to do more yoga.

by Vern the Man March 19, 2021

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