FFSM 

Internet chat for "For Fucks Sake Man"

Guy 1 - I'm sleeping with your sister
Guy 2 - What? FFSM!

FFSM by PsoriasisUk December 2, 2011

FFSmasher 

godly defiance

ED FFSmashered John with his powercord rush.

FFSmasher by Anonymous August 25, 2003

ffsml 

Conflation of FFS and FML. Usually employed as an exclamation immediately prior to a face desk, extreme face palm or other similar action.

You want me to what? FFSML!

ffsml by Facinorous August 2, 2014