a variation of smd (suck my dick) meaning “suck my girl dick.” usually said by girls but can be used by anyone. commonly used in casual conversation or texting.
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!