Mf'er 

Short for mother fucker. Can also be said as mf.

Boy one: HEY! THAT MF'ER TOOK MY MINECRAFT
Boy two: Just let it go dude

Mf'er by A_Bi_Legend November 11, 2020

mf'er 

Military abbreviation for "My Friend."

Sgt. Connelly was one courageous MF'er.

mf'er by zabazuve-ha September 19, 2007

MF'er 

Mute Forever. Used in elite criminal organizations to show that the wearer is never going to talk about anything with someone outside their organization.

Tiny,"Hey Bob I think that Tom snitched on us."
Bob," Naw Tom is a stand up MF'er"

MF'er by ERICWRIGHT075 April 23, 2021

stfu mf-er 

pronounced: es-tee-ef-you-em-ef-er. a way of saying: shut the fuck up mother fucker.

used in texting, short hand messages, or even in a stressful situation; if someone insults me I'm like, "STFU MF-ER!"

stfu mf-er by kkbby June 19, 2009

Turkish MF’er 

A person that has a form for every request.

I just wanted a day off work and this Turkish MF’er told me to fill out a form.

Turkish MF’er by JSJ918 November 26, 2019

MFers 

Short word for; Motherfuckers

Those MFers over their are annoying as hell. We should get away from them.

MFers by acchill April 10, 2016

Mfers 

Degenerate NFT buyer with a large collection of watches.

Those Mfers are gonna raise the floor with their sweeping.

Mfers by Jonny Poker Asia February 6, 2022