The word Jack is a military term given to an individual who is in the words of Lieutenant Colonel Hewitt of the Australian Army "A bad bloke."
The term Jack is given to someone who is not helping out his mates with tasks and generally being a shit cunt. If an individual is not helping his mates it is said he is "going jack on his mates."
The word Jack is frequently combined with the term Cunt or Fuck to more deeply illustrate the individual's Jackness as well as for added insult. Thus if a mate is being exceedingly Jack he is be called a Jack Cunt or Jack Fuck.
Digger 1 "Oy mate help us out with cleaning the Mag 58"
Digger 2 "Na mate i cant i gonna go have another darb."
Digger 1 "Thats your twelvth darb this hour you are dead set the Jackest Cunt i know.

Old Matey 1 "Oy you coming out on the piss tonight."
Old Matey 2 "No i can't i am too tired."
Old Matey 1 "You fucking Jack Cunt you didn't hit the piss last week either fucking Jack mate."

Pte Johnny "hey you going to Sydney with the boys this weekend."
Pte Jibbs "Yo man i cant i am trying to save money."
Pte Johnny "Oy is your name Jack cause your a fucking Shit Cunt."

Nardella "look at this cunt all jacked up on his own jack what a jack fuck."
by Ninja Mc Stealth Kill July 22, 2010
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Jack -
A very intellectual, insightful man with the most honest heart. His intentions and words are always well intended and he has the sexiest eyes in the whole world.
If you ever argue with a 'Jack' he will for sure make a Jack Ass out of YOU.
He always thinks ahead and see's the bigger picture. He hates fighting/ argueing. * yawn* its boring to him.
But he will always win because he plays by his own rules. His morality is strong and hes as dependable as a solid rock. A guy you can count on. Loves meeting new people where ever he goes. Loves freedom. Hates being conformed. Wont change for anyone and wont expect you to change either.
Highly independant. Likes to use his head. And its a very powerful one..very brilliant. Has women falling every where while hes still standing.
Humbel.Funny. Wont lie.
Jack is the sexiest guy ever
by SomethingDifferent07 January 07, 2009
Jack is the name for a boy who will probably be the most amazing person you will ever meet in your life. He is intelligent, funny, sweet, caring, has beautiful eyes, dresses to kill, and will make you feel like you are the luckiest person on the face of the planet. However, watch out. You may lose track of time just sitting in his bed cuddling for hours. If you meet a Jack, consider yourself the luckiest person on the face of the planet. That, and he's an amazing kisser.
That boy, Jack, is so amazing.
by asc1120 June 13, 2010
To steal, or take from an unsuspecting person or store.
Yo nigga! Yo shit got jacked!
by Randy December 02, 2002
Highly Attractive and Sexually Intriguin Individual. An "Ultimate Sex God"
Oh my Fucking God. I would tap a Jack.
by JackSharples April 19, 2009
Jack is the one person you want to hang around and be with. He is funny, random and he is truly "the shit".
Jack is the shit!!!
by Fat Link February 25, 2010
The hottest most sexiest guy on the planet. a real comedian, but sometimes doesn't stop talking. has the hottest eyes, hair, and body. a swimmer.
I love jack! <3
by OMGHELLO February 05, 2010
Term used in Chicago to address a individual, stranger or acquintance. Also can replace jack or charlie in Chicago. Usually used at the end of a sentence.
"I need to go to the store jack", " Im not dealing with ol' girl no more jack"
by Kenneth Johnson September 02, 2007

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