SDMF is a the creation of Black Label Society--a band led by Ozzy Ozborne's guitarist Zakk Wylde. SDMF is a unique hybrid of shared ideals and fan club. The actual acronym is most commonly read out as either "Society Dwelling Mother Fucker" or "Strength Determination Merciless Forever"
I am a SDMF, and do not wear pink poloshirts with the collars up.
Babe, we still gettin freaky tonight, right?
no, my bestfriend's cat just died
so?
SO, I have to be sad for her and I can't do that while having sex with you. Geez, you're such a pig! Go sleep on the couch!
smgdmfh!
More profane Netspeak variation of smh, meaning "shaking my motherfucking head". An expression of general disdain for an event or statement.
IM conversation:
Userguy1: So... do you shower every day?
Usergirl25: smmfh...
Userguy1: ...
Userguy1: ...what was that for?
Usergirl25: What kind of question was that? Of *course* I shower every day! Don't you?
Userguy1: ...