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Jack Greiner

Always on the nonstop grind. Very good in robotics and dominates R6 Siege.
Ethan: Jack Greiner is always grinding. Happens to be a pro boe-bot builder
by a_prankstergangster May 16, 2018
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Jack

Jack is a sexy blonde boy with blue eyes and very good at sport and is boy who get all the girls . A jack is very funny but can be extremely moody
Jack is so fit and he’s so good at football
by Jt08 123 November 27, 2020
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You Jack System

Also known as the “Fuck You Jack System” where a person leaves behind a mess, does a half arsed job or just blatantly doesn’t give a fuck because they don’t care about the state of the job, task or place they are working because it will be someone else’s problem when they are gone.

Basically another way to call out people for being lazy flogs.
Sparky 1 - Jeez, cleaning these cable clippings will take forever…
Sparky 2 - Nah mate hasn’t anyone told you we work on the You Jack System!!!

New worker walks into communal kitchen and finds person has used and not replaced any of the paper towel, milk and left dirty dishes behind… thinks to themselves jeez these flogs work on the You Jack System here.
by Leader of the idiot parade January 29, 2024
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Jack's Crazy Beard

The kind of beard you get when you come back from the secret island and go a little crazy and start listening to Nirvana really loud while driving around in a van.
Damn dude, where have you been? You've got a serious Jack's Crazy Beard going on! Also, nice van.
by Malachi Constant April 12, 2019
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Jack cameron

An absolute fucking unit.

Built like a kangaroo and extremely sexualy frustrated.
Be afraid and grit your teeth because I'm coming in dry!
Only eats with his hands and only comes if he loves them.
Andrew: best masterbater about my technique is unmatched just like my lifting technique I'm so ripped bro

Mr mac: so sexy bro your such a Jack cameron
by Andy Pandy super handy February 18, 2022
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Jack

A crazy, influential, wild, and awful person, someone you must look out for. He might drive you up the bend or make you fall in love. In either situation never let him show you a trick with a cigarette or share a shower with you. He's too mad for that and you can do better!
Have you seen "Jack"?
by JulietPlymouth March 7, 2025
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Jack W

boy 1-wooah is that dustin from that show
boy 2-no its just jack w
by phat_dummy445 January 14, 2021
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