SYFM

Short for "shut your fat mouth".

CrZyLdy77: omg! i just got tix to see fall out boy!1!
MUNKYchick12: no way! SYFM!!!
CrZyLdy77: no, rlly!!!!!!!!!1!

by ChigglyWiggly May 09, 2007

syfm

Shut yer fuckin mouth. much similar to stfu

syfm n00b i pwn you

by haMz October 07, 2004

syfm

SHUT YOUR FUCKING MOUTH

HEY YOU SYFM

by meowserrrs June 27, 2025

SYFM

Short for 'shut your fat mouth' or 'shut your (bad word) mouth'. - Seriously, I'm not that vulgar like you!

Atlanta boi: Yo why your jeans be lookin like Oliver tree.
NY girl: Boy syfm, those jeans are so tight they fit a lamp post!
Atlanta boi: Gurl sybau you remind me of... what are they called again... them Glaze house girls, you white, have tiktok and do goody ass dances!

by rir1xo August 09, 2025

syfm

an abbreviation for "shut your fucking mouth", kind-of has the same meaning as "shut the fuck up"

"hey i was wondering if i ca-"
"SYFM BITCH"

by a4tech_keyboard2 July 05, 2025

Syfm

Insulting and vulgar way of telling someone to shut up or silence themselves. It translates directly to "Shut your fucking mouth."

"Syfm you fool."

by Qwertz24 July 05, 2025

SYFM

SYFM - meaning "SHUT YOUR FUCKING MOUTH".

usage is like sybau, "SYFM🥀"

by lilman418 May 29, 2025