50
Short for jackass; refers to a man that is a jackass
" Dont be a Jack ! " " You act like a Jack when you lie !" " You were such a Jack to the waitress."
by Dodgedthatbullet January 06, 2015
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51
Jack is a weird human, who's face scares a lot of children, he's the type of guy you just don't want to be around, but is also a sick guy, with a really fit girlfriend you just want to fuck
That boy is a right jack
by Baconislife July 13, 2017
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52
Type of dance popularized by early House music. Popularized by the song, "Jack Your Body" by Steve "Silk" Hurley. Not to be confused with Farley "Jackmaster" Funk..
"It's time to Jack"

"Jack your body"

"There were up there, Jacking. It was all, Ouija this, and wobbly that"

"Strung out, I jacked all night to the music"
by Komplizert June 30, 2012
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53
The ultimate head fuck.
A Jack will charm you, whoever you are. He will be the swetest person ever to you, make you feel like the only girl in the world and he's gorgeous.

But beware, he's a player, a liar, and a fighter with a hot temper.

He will make you fall, then let you down, beg for forgivness and you will forgive him and he'll do it all again, always.
Girl1: I love him, but I hate him. He's so confusing!!
Girl2: Looks like you've found yourself a Jack
by Μαλάκα December 05, 2011
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54
alone; single; partnerless; not in a group;
i'm on my jacks.
or
i'm on my j's (abbrev)
by Greaser November 09, 2003
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55
yea it was a jacks altogether
by ghte May 21, 2005
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56
another meaning for cool

can be used describe how people look. This is a complement.
e.g.
dude 1: "hey man look at that girl"
dude 2: "i know she's jack"

e.g
girl 1: "look at those dudes shoes"
girl 2: "omg thats jack"
by .h.e.l.l.o.w.o.r.l.d. March 07, 2011
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