Jack

A short blonde who can be a jerk but can also can be the nicest guy ever when you need him if you meet a jack don't let him go

Jack is the best guy ever

by Grace c123 April 03, 2015

Jack

An abbreviation for hijack; to steal, or to take something you are not supposed to take.

Victim: What happened to the book I was reading? It was right here on my desk.

Sidekick: Somebody 'jacked it.

by semantic historian May 22, 2013

Jack

A guy who is a totally obsessive Virgin who will stop at nothing for a girl to touch him. Be careful, if you start to talk to him it's hard to get away from his latch.

Girl 1: I met this guy last night he wouldn't leave me alone

Girl 2: oh sounds like a jack

by Sassy Sally August 22, 2015

A Jack

Cheats on women and lies to every single one of them. Pretty much lives up to straight J guy names being assholes!

"Man don't be A Jack!! They suck!!!"

by HeyDanisaurus June 01, 2020

Jack

A very homosexual 6th grader who covers up the fact that he is homosexuality sexual by saying a term called mega fagot jack is a free loader and goes to people houses and lives with them but this is disrespectful as fuck

Kiran: hey what's up
Jack :gimme food mega fagot
Kiran: what is a mega fagot

Jack: it's you
Kiran:wdym
Jack: I'm a pussy to say it in front of people who would do something
Kiran: oh ok

by Stopsayingfagot May 21, 2018

jack

it means cigarette. most commonly used in the D.C., Maryland and northern Virginia area

yo son do you have a jack i can smoke?

also, yo moe lets go hit a jack son.

by hardcore joe December 22, 2011

Jacking

When two or more people engage in physical combat.

I heard Mark and Tim got the jacking after school yesterday.

by @mikefromMemphis43 August 21, 2018