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73.
Its an action of pulling a super slick CIAish move like Jack Bauer from 24. When you pull a Jack its something amazing that will save your or the whole world. When you Jack it means that you have just made a BEAST move or you have achieved superiority. When you pull a Jack it means that you have gotten yourself out of something that no one else could've except for Jack Bauer-Kiefer Sutherland
Wow he went all Jack on his ass
Yeah dude you just wonder why the police keep chasing him
I don't know all i know is man he is amazing
Yeah he always pulls a JACK
by beast23chicago March 28, 2009
 
50.
Jack is the sweetest, cutest, and most amazing person anyone could ask for as a boyfriend. He has the prettiest eyelashes, is awesome bassist. He will make you laugh, and smile every time you see he's texted you or when you hear is voice. When you Skype, you just can't help but being insanely happy even if neither of you says anything at all.
Jack is a Mass hole.
by Lemonbutterbiscuit October 26, 2011
 
51.
jack is someone with a maasive cock, and nice nipples, he is tasty in bed and has good taste in music.
'oh you've got a big cock'
'yeah its called jack'
by lovejackybabieeeeeeeeeeee October 15, 2011
 
52.
A british jackass that annoys the fuck out of others, also known as Anon, will most likely lurk underneath your bed requesting to play video games
"That guy is such a Jack, look at him,"
"Oh yeah, he called me his m8 one day"
"he called me a faggot"
by stitchez July 07, 2014
 
53.
Jack is someone who is exceptionally gay and has a secret(or many secret) relationships with boys. However he tries to hide this by chasing skirt and basically getting as much pussy as he can. Sometimes he may truly have feelings for the girl but he tends to prefer men. The signs of being gay are all there and many people say that he's gay but no one really thinks it.
Girl: You know Danny right?
Boy: Yes! Oh my god he is so fit!
Girl: What the fuck?! Your such a Jack.
Boy: No I'm not. Suck my Dick bitch.
by BlondeBitch1975 February 22, 2014
 
54.
Jack is a flamboient fello who enjoys reciveing more than giving. He is use to a bit of anal and enjoys the company of the younger generation. He is un-loved by alot of people and he makes it too obvious that he likes penis'. He likes to shove his tiny penis into the exhausts of shitty cars. He thinks that his SAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB is the best thing in the world and he like to overuse shitty jokes to make people like him even though he's a cunt. He is a massive smelly Coon and he takes his time when walking past a playground full of small childeren. You can tell by the tiny boulge in his trousers that he is aroused by this.
QUICK RUN! I think there's a Jack about.

Holy shit Jack found us.
by Jacksafag911 January 14, 2014
 
55.
Fucking best guy ever.
jack is awesome
by zane bear December 02, 2013
 
56.
Tall, friendly and extremely calm. Fun to hang out with and talk to. Calms you down and can brighten even the worst of days. Very good listener. Can be a bit shallow. He is a great friend to have
Hi Jacky
by awesomesauce155 May 21, 2013