OMFF 

Oh my fucking fuck. A more informal version of omfg.

OMFF! My motherboard burnt!

OMFF by _rotor. June 24, 2010

OMFF 

Oh my Fantastic Fox

"hey im talking to you frome a phone i trough my laptop out te wndo! XD "
"OMFF"

OMFF by fantastic fox (real) December 21, 2014

OMFF 

Oh My Fucking Fuck

Yeah...

dUDE: OMFF!!! You fucked yourself!

Dude: So waht? Go Tuck yourself in!

OMFF by Samus Aran is Awesome July 6, 2005

OMFF 

Old Man Friend Forever. When an older man, is best friends with a younger girl. Man is usually old enough to be her father.

He doesn't perv on me, he's my OMFF.

OMFF by Joeactor July 14, 2009

Omff 

The uncomfortable feeling of encountering something consciously unexpected yet unconsciously expected - in hindsight you really should have known better.

"Omff! I knew we'd run out of gas!"

"Why the omff, dude? ANY woman would dump your ass after sleeping with her sister."

Omff by Psych-Ho March 28, 2025

OMFFSM 

Used by Pastafarians and Spagnostics;

Oh My Fucking Flying Spaghetti Monster

Used like omg or omfg, but undogmatically broadminded... in marinara.

OMFFSM!!! That's a gnarly lil' eyepatch yea has there matey!

OMFFSM by Johnny Ringo aka Jeru Zalem March 14, 2009

OMFFG 

Oh my fist-fucking God! A stronger version of OMFG.

OMFFG, your new car is badass!

OMFFG by The Dingbats June 13, 2007