A jack is a type of species known to be a twat
Woah there goes a wild Jack
by Imagine taking this name November 22, 2021
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He is amazing, will always be there for u and listen to any of your rants. When u dont respond or if he can tell something is wrong he wont stop calling till u pick up, but will also give u time to cool off, while still being there for u when u need him.
"who helped u get through all of that?"
"Bro my best friend Jack, i wouldnt have made it without him"
by BUGGGGG<333 February 2, 2023
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The weirdest of them all
by Quesar June 14, 2022
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Jack is a very humorous guy who may have black (sometimes curly) hair, with some facial hair, and looks like he lives out of a cave. The music he may listen to can consist of old rock, and alt-rock/indie music.

Despite him being funny, his anger or frustration may get the better of him at times, especially because of video games or someone else's incompetence.

A Jack may also be a certified Spack who may spank him self reguarly (see Spack No.1)
Spank the leg Jack, and don't ya come back no more, no more, no more, no more. Spank the leg Jack, and don't ya come back no more!
by Jack Spank9049 February 26, 2023
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Jack is a lovely person. Often he would have a short beard wiv black (sometimes curly hair), and would sometimes look like he lives in a cave. Other charateristics of a person called Jack include them getting in a bad mood from time-to-time, but would often have a great big smile!

Jacks also may have a tendancy to listen to Spack Music
My cousin Spack No.1 is called Jack (he is a Spack!)
by Jack Spank9049 February 23, 2023
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