To instruct a fellow jackoff(n) to continue jacking off(v), despite himmerself's better logic.
by Pillup March 6, 2006
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huge dick, bigger than a plain that's why all the girls complain cuz they can't get jack. Gets all the girls. You'll be lucky to even touch him. only takes dem fresh ones with the massive tits and his balls hang on a shelves cuz they are too heavy.
Jack can't fuck you cuz his dick is too big.
by Dy1aen February 5, 2018
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Jacking refers to the act of robbing or stealing and can refer to jacking one person in particular or can refer to say lyrics from a tune.
"Did you hear what happened to Leroy Brown on the 93 bus last night? He got jacked by a group of kids... they took his phone".

also:

"That 50 cent is whack... hes always jacking lyrics from other mans tunes... allow him"
by David Fisk April 8, 2006
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messing, joking, or fucking aroung with someone or something.
by Amy August 10, 2004
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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 14, 2010
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