mfw 

Abbreviation for "my face when

>mfw gerrard scored a goal against the us after 4 minutes

mfw by unowiel June 14, 2010

MFW 

Abbreviation for "My Face When". Started as a way to respond to posts that a poster usually disagrees with in some manner, and is typically done to mock or troll said poster.

MFW utilize reaction images and are almost always green text

ANON: What do you guys think about my new Mac?

ANON 2: >MFW anon is now going to die of AIDS and cancer

MFW by Shores386 March 15, 2011

mfw 

Stands for "My Face When". Some people will type a strange emoticon after or just leave it as mfw.

>mfw :U

>mfw people think this is a remix

mfw by TrashednScatteredD January 13, 2011

MFW 

Abreviation for "My face when" This is commonly used on the forums of 4chan, in addition with green text stories. Usually, the picture is on the side of all the green text, and usually at the end, "mfw". It's particulary a meme face Ex.
Forever alone, Troll face, Y u no. etc.

>Sister embarrases me in front of friend
>Don't masterbate for 2 weeks
>Start fapping in the shower
>See my sisters bodywash
>Shoot a huge load
>mfw my dog smelling my sisters ass all day
Trollface

MFW by x4nothingx September 9, 2012

MFW 

an abbreviation for "motherfucker what?"

"i keep kids in my basement"
"mfw?"

MFW by mfwmate February 16, 2020

MFW 

Acronym for : Mother fucking Win

P1: " Dude i just got excellence in my exam with no study!"
P2: "MFW!"

MFW by anonnz September 28, 2011

MFW 

An acronym for "Mother fucker why". Typically used when your teammates shoot you in CS:GO. Looking at you, Tom.

Player 1: "Oh sorry dude, thought you were a counter-terrorist."
Player 2: "MFW??"

MFW by FuckMemes January 18, 2017