Fmerk 

A facial emotion or out loud expression for a response to something that was fucking weird.

He said he had a shmeckle and she replied with a, "FMERK!"

He had a fmerk on his face when his girlfriend dumped him because he was not gay.

Fmerk by Nikki M. C. September 25, 2007

der ferk 

Der ferk is a cleaner replacement for what the fuck. Used in mixed company, like in front of parents or teachers.

Dude, I got a 98 on that math test!
Der ferk? You stayed out partying last night, how'd you pull that off?

der ferk by totalg33k January 17, 2011

Vert der Ferk

The Swedish Chef coined translation of W.T.F., appropriate for incognito cursing around small children, marionettes, puppets or on television. It’s use is frowned upon in IKEA where Swedish vernacular is commonplace.

IKEA: “we’re ert of der meatballs.”
Me: “Vert der Ferk! You think I’m here for furniture?”
IKEA: “gert ert.”

Vert der Ferk by Bonehead September 7, 2021

ferkelbiest 

from the German ferkel=piglet, biest=beast. In reference to a (usually) female with insatiable sexual appetites.

We stayed in bed all weekend 'cuz she's such a ferkelbiest.

Man, I had no idea my new girlfriend was such a ferkelbiest. I haven't slept in a week.

ferkelbiest by frklbst June 10, 2014

ferkern slergert 

Pronounced (fer•GEN SLER•gert)

A polite, undercover way to say "fucking slut," used around parents or guardians who don't like the use of cuss words

Reese told Gracie that Celia was being a uge ferkern slergert.

ferkern slergert by thanksbye_ August 8, 2017

Flerken

The cat like alien creature that Captain Marvel keeps as a pet. While it may appear as a normal cute Earth cat, inside it's mouth contains a shit ton of tentacles, smaller mouths and even pocket dimensions and bubbles of time.

Rocket Raccoon - *Trying to kill Chewie the Flerken* You have a Flerken on your ship!
Captain Marvel - That's my Cat!
Rocket Raccoon - That is not a "cat"! That is a Flerken!

Flerken by slangctionary March 31, 2019

Ferk 

a fucking jerk.

Someone: Bob has recently became a ferk to me over the past month.
Someone 2: Cool, no one gives a fuck.

Ferk by plsapproveme August 12, 2020