An amazing, extremely attractive guy with a wonderful personality. He keeps to himself, but even so is constantly hit on by girls lusting for his good looks. Even though he's kind of a loner, he will always be there for his friends and those he loves. He loves the color black and Japanese rock music, as well as anime and video games. He's a wonderful nerd who any girl would be super lucky to have.
"Wow, you see that guy over there? He's a real looker."
"Excuse me?"
"That guy standing there all alone in black. I usually don't go for that type, but god, that Jack is hot!"
"That's my fiancé you're talking about."
". . . You're the luckiest girl in the world."
by Jack Skellington's Lover October 21, 2013
The act of chilling, especially on a Sunday with a hangover.
I hit it way too hard last night, I need to jack on the sofa.
by smash101 October 20, 2013
Adjective:The state of being an immature, arrogant, prick.

Verb: "To pull a jack" is to get way too "handsy" early on in a date. This then followed by a drawn out, idiotic grudge.
"Dude, he was SUCH a Jack last night!"
or
"OMG! He pulled a total jack on our FIRST date! I dumped him"
"Is he still pulling a jack on you? It's been over a year."
by screwyoujack June 15, 2013
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 21, 2013
someone who always calls or texts you asking you to come out or go round his house and play PlayStation with him.
someone who you don't want to hang around with because he is boring, lame and just embarrassing yet always wants to hang around with you (probably cause your a Chris).

quite a smart kid but seem dumb. not good with girls always shies away and becomes nerves when a girl talks to him.
Jack: hey chris you are so awesome do you wanna come round and play gran turismo on my ps3?
Chris: sorry man ive got plans, im going to meet my day.
Jack: oh then, how about tomorrow?
Chris: i cant im staying round my dads tonight.

Sarah: hey jack
Jack: hhh.. hi.
Sarah: you alright?
Jack: yyeah, i.. gotta go now.
by who you wanna be February 25, 2013
a hot guy that will love you forever, and will never get over you. he will never cheat as long as he is with you. even though he is shy and gets nervous around you, he is still the best bf to have over any jerk. he has many girls that are friends and you probably will get jealous because of that, but dont worry he will still want you. he has the dark justin bieber hair that every girl loves when he flicks it, and has the most sexiest body you will ever see, plus he will always try to impress you, but after a mistake in front of you he may lose confidence :) that and he is an amazing kisser :D <3
girl 1. omg, have you seen jack today??
girl 2. damn yes, i would like to lick him up.
girl 1. not before i do ;D
girl 2. he gots the hots for me.
girl 1. he has got a girlfriend already.
girl 2. doesnt mean eh cant cheat ;D
by loveya;D December 20, 2011
Slang for cigarette like shorts, cig or bogie. Created in the DC area years ago and used by a lit of people that smoke ports.
Yo, can I bum a jack? I'm going to smoke a jack. I need to go to the gas station to get some jacks.
by pens66871 September 14, 2011

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