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A secretive person that no one knows
Mr x by A chicken named jommy May 16, 2016
Urban Dictionary Merch
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.
Mr X by Junkrocka May 15, 2008
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.
mr x by mogrove42 July 22, 2006
Bernie the Farmer from the Shaun the Sheep movie but he lost his memory and calls himself Mr X.

He becomes a fully HECTIC flemmo barber who gives people fresh fades!
Guy 1: Yo I'm about to watch the Shaun the Sheep Movie
Guy 2: Can I come?

*After watching the movie*:

Guy 1 & 2: OMG Mr X is FULLY SICK he's DA GOAT FRFRFRF ONG NO CAP I WANT A FRESH FADE FROM HIM RN W MOVIE
Mr X by goofy ahh skibidi ohio rizz October 30, 2023

Mr X Cock Size 

Damn Mr X Has A Big Ass 19 Inch Cock
Mr X Cock Size Is Huge
Mr X Cock Size by Mr X X X March 3, 2023

Smithers x Mr. Burns 

A ship involving Smithers and Mr. Burns from The Simpsons.
Dude! Smithers x Mr. Burns should become canon!

Mr Mann X Desi 

My otp
Daku: What's your server otps?
Me: Mr Mann X Desi
Mr Mann X Desi by DGETSDTHHGS March 23, 2020
More from Urban Dictionary

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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