Mudder Fucker 

People who won't stop bragging about their involvement in torture races, i.e. Tough Mudder, Spartan Run, etc.

"Here comes Steve wearing a new race shirt he's going to tell us all about, what a mudder fucker."

Mudder Fucker by Lenny Laserdisc May 13, 2015

Tough Mudder Fucker 

One who completes the Tough Mudder Challenge.

Guy1: Did you hear Michael completed the Tough Mudder Challenge?

Guy2: Yeah he's a Tough Mudder Fucker.

Tough Mudder Fucker by XxMayhem6xX April 22, 2012

Muddler Fucker 

A person who wile preparing a libation that requires muddling; muddles in an overkill fashion, to the point where "bits" from every sip end up in your mouth.

Wow, Alice really smashed the mint in my mojito to smithereens. What a muddler fucker!

Muddler Fucker by NIHILER February 13, 2021

murderfuckers 

a international music group with members all over the world a based group they have ties with akvk

I'm the newest member of murderfuckers I'm from irak

murderfuckers by whitekray March 7, 2020

mudderfucker 

A person who has sex with a Harvey Mudd student (Mudder)

-lets hang out tonight
-No, I actually have something to do))
- what?
- A cute boy from Harvey Mudd invited me over to his place)))
-YOU MUDDERFUCKER!

mudderfucker by ra tsa tsa June 17, 2022

Modderfucker 

Some motherfucker who is a modder who does game modifications in copyrighted games, and the law is against videogame moding, because it goes against fair use and still is impune to such outlawed action.

Modder: heheh modding iz cool, dude, ecksdee
Random: Why are you doing mods for coyrighted games? It's illegal! You're such a modderfucker...

Modderfucker by TheKamikazeMonkeys July 28, 2022