Jack Back 

Jack Back

1. To steal something back from someone who stole from you (i.e. jacked you).

2. To jump, attack, or otherwise harm in retaliation for the same thing having been done to you.

Popularized by the rap song of the same name.

Guy 1: Hey, there goes that dude who stole my Cd's

Guy 2: Did he lock his car door?

Guy 1: No, let's hit him with a jack back!

Jack Back by MastaRoe March 17, 2010

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!!!

Jack Back by MidTRahX_303 May 15, 2023

Jack back flan

when you place flans on a person's back and wank onto them until you cum and then they have to eat them

Matthew pulled a Jack back flan on me last night

Jack back flan by cumluvrrrr February 7, 2022

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..."

Jack's back by Ali JTB October 11, 2005

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"

throw back jack by scram.bler January 20, 2015

Jack in the Back 

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.

Jack in the Back by baddefinintionperson May 28, 2009

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.

Finger jack from the back by Finger Maniac March 18, 2011