mr x

mister X is a person that you talk about with friends in code, usually a dealer of things that are code-worthy. See Mr. Nice Guy.
Are you going to mr x's? To get that stuff? Cool.
by mogrove42 July 22, 2006
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Mr x

A secretive person that no one knows
Mr x is annoying
by A chicken named jommy May 16, 2016
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Mr. X

Mr x is a person who is a threat to the one direction fandom they leave really strange messages and death threats towards the boys. They have been inactive since around 2013 but we still should look out for them.
We need more guards theres been news about mr. X being at a show in 2021
by onedirection._obsession July 10, 2021
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Mr X

Mr. X is the male version of the letter "X" in the English alphabet. Mrs. or Ms. X is the female version. Since they have no genitalia it is hard to differentiate between the two.
abcdefghijklmnopqrstuvwxy and z - Mr X is right in there towards the end.
by Junkrocka May 15, 2008
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Smithers x Mr. Burns

A ship involving Smithers and Mr. Burns from The Simpsons.
Dude! Smithers x Mr. Burns should become canon!
by Sasa Alien May 20, 2022
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Mr X Cock Size

Damn Mr X Has A Big Ass 19 Inch Cock
by Mr X X X March 03, 2023
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Mr. X

Mr. X is a legend.
Mr. X is a gentleman, with good manners.
Mr. X is sensitive to light.
Mr. X is proactive.
Mr. X is prochoice.
We love you Mr. X
by TummyBreath August 18, 2024
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