Short British wanker with a shrimp dick and long 5 inch forehead. Usually used as an insult or as a substitute for the scientific word, wank.
"Look at that Jack over there"

"Im gonna jack off my long hard 10 inch pussy penetrator to this hot hoe I creeped and found online"
by JamalWithThe9Inch March 8, 2017
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Jack is a Male name and it’s usally a boy with blonde hair. Jack is sexy and romantic. If you like a jack you better get him before anyone gets
Him cuz jack is the cutest guy at school, may be sweet but is a beast in bed. Look to fuck more Jacks
Me:guess what

Cynthia: what
Me: i fucked jack yesterday!
Cynthia: no fair!!!! I want to fuck him!!
Me: WTF?? You know he is my bf am suou already have a shitty bf AKA Pedro
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Jacks are quite the charmers. You will develope a crush real fast. He will pay attention to you and once the feelings pass for you both, he becomes your best friend. Gotta love a good Jack.
Girl 1: did all the girls at our school at one point like Jack?
Girl 2: ya apparently
by AL20000 June 25, 2018
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A nice intelligent person, who gets distracted at times, and loves video games. He is the best friend you could ask for, and also the best son. Jack likes having fun, and he doesn't swear, but does start a fight once in a while. When ever he is angry at someone, he gets over it quickly.
Jack is cool
by the_jackmister_123 May 25, 2017
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He is truly the shit. A great guy who will stick to your side and make you roll on the floor laughing #McLovin'
Ashley: Yo, did you meet Jack yet.
Tiffany: No, why?
Ashley: He just told the best joke ever
by SunPanther1 July 12, 2017
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Jack is the sexiest guy you'll ever know. :) When he smiles, I smile. His gorgeous eyes give me chill bumps. His athletic abilities make me stare in awe. The way he adores me lets me know I'm not going to lose him anytime soon! ♥
I love Jack!!!
by Jack ♥ September 11, 2011
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So white, plays smash in class on his Nintendo switch, thinks he’s a light skin but he is a white skin, looks like he bleached his body he is so white
Jack what you doing. Oh I’m just being white
by Jackissowhite November 7, 2019
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