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Unreliable traitor who ditches his friends to play fallout instead of Starcraft 2 because he's simp.
Hey lets all go play Starcraft 2 except for Bob because he is such a Jack
Jack by NoviEXE April 7, 2020
Jack is a nice guy who can sometimes be the worlds biggest douche bag when it comes to everything. When he isn't being a douche bag(1 in million chance, possibly never) he can be a really top-class guy who's fun to be with and is great at playing with friends on games. Play any game with him and he will kill you and he will enjoy it, making you feel annoyed and want to stab him in every part of his body.

Guy: WTF! why did you kill me?
Jack: you might have been a traitor
Guy: but I wasn't
Jack: That's what a traitor would say
Guy; Stop being such a Jack
Jack; But I am Jack
Jack cool annoying curly hair douche guy fun
Jack by muchispac March 1, 2014
A great wonderful guy that everyone will fall in love with. With rocker abs and hott as hell. You will dream about him when he sings you to sleep. Mostly very shy but worth it. He gets mad when his friends try to take u away from him.
Girl: I love you.
Jack: I love you too.
Girl: Awww you are so sweet.
Jack: Thanks and im sorry about my friend today he tryed to flirt with you and i got pissed.

Girl: Its fine. :) <3
jack by SEXY GIRL! October 26, 2011
A pretty cool guy, who's well-known as player. His full name is actually Jack Sparrow. If you ever see him, you should try to get his autograph immediately.
A: Dude man, who's that?
B: He's Jack, Jack Sparrow.
A: Dude, I gotta get his autograph
jack by unstoppableyolo March 28, 2013
Jack is the most amazing person ever. He has gorgeous eyes, a good body he's loving and trustworthy and a good athlete. He's also absolutely amazing in bed and he has an absolutely massive penis. It's crazy how big it is.
Girl one: did you see jack?

Girl 2: yeah he's so dreamy and I've heard he's hung like a horse.
Jack by Coolperson111 December 27, 2012
Massive cock, very caring, strong and trustworthy
jack
Jack by Alix jackson August 19, 2012