mfw 

Means Mother Fucking Willy.

A discreet term/acronym for anyone who shows disgust to a contemptible person or organ as in the private organ/s.

(Bad Meanings)

Hide your MFW! You maniac!

I would love to see your MFW now, please.

He has short MFW so dont bother fucking him!

Oh! I hate MFWs.

mfw by Wordhoarinventor January 20, 2011

MFW 

A drunk alcoholic bitch, that has 3 24 hour tokens, begs her people for money 24/7. Also have meltdowns, Sex, Threatens children and animals.

Noel did you heard Charlie pulled a MFW again. For the 3 week

MFW by One Leg wonder December 20, 2020

mfw 

mfw, or MFW, stands for Mikey Fuckin' Way, which is a nickname for Mikey Way, the bassist for New Jersey alternative band My Chemical Romance. Term became widely known when a black t-shirt featuring 'MIKEY FUCKIN' WAY' was worn by him and was being sold on the MCR merch website.
Commonly used by fans as an explanation, both good and bad.
The meaning is usually obvious from what sentence its in.
Something that is typically distressing or something that is usually positive can be followed by mfw.

(Good meanings)
I just got a 24 pack of redbull, mfw!

New MCR song rules, mfw!

I just beat Guitar Hero on expert, mfw!

(Bad meanings)
I failed the algebra test, mfw.

I really wanted a PBJ sandwhich but we're out of bread. Mfw.

Tickets to that show are sold out already, mfw.

mfw by CoffinDancer March 25, 2009

MFW 

MFW, a bitch that always complains, gets drunk, has trainwrecks, and sometimes has sex during live streams

Jay don't be a MFW
What's that? Omar
A fat bitch that always complains and get drunk

MFW by FUCKOFFTROLLS July 5, 2020

My Friend Wants to Know (MFWTK) 

It is the most go-to starter phrase when asking an abnormal question to hide behind a facade and save yourself from judgement, embarrassment, humiliation, possibly dishonoring your family's name.

Use this phrase if you are suffering from severe to mild symptoms of curiosity but still want to save your future-self from the consequences of asking such disgraceful questions and from being looked at by other people as a degenerate.

Example 1
Dude 1: Bro, 'my friend wants to know (MFWTK)' if Ron Jeremy's magic beans can REALLY help make your lil jimmy grow bigger and last longer in bed.
Dude 2: (rolling on the floor laughing) HAHAHA!!! Who's the friend?!
Dude 1: (panicking) Shit! I gotta go. I forgot to walk the dog.
Dude 2: Dafuq? But you don't have a dog...

Example 2
Curious Teenager: (asking the users of the interweb) 'MFWTK' how to properly wipe your rear to eliminate dingleberries. He says that he stains his boxers on a daily basis and that his mother is getting tired of cleaning up after his 'shit' like his messy room.

My Friend Wants to Know (MFWTK) by AnGrYRameN December 16, 2016

MFWWWY? 

Mutha Fucka What's Wrong With You? as said by Comedian Travis Simmons aka The Big Funny

MFWWWY? is what you say to a friend, to stop them, from doing something stupid?

MFWWWY? by julius perry April 30, 2012

MFWIC

a tech-geek spawnling, it stands for MotherFucker What's In Charge

"Hey Intern! Who's the MFWIC around here?"
"You are, sir!"
"That's right, bi-atch!"

MFWIC by emily November 9, 2004