A shortened term for “suck my dick”
Boy: Hey, SMD
Girl: Um... I’m 10
Boy: It’s Alright bbg, now SMD
This basically means suck my dick so to all you boys out there trying find a woman i would advise not to say this :)
SMD while I SMH literally means, suck my dick while I shake my head. It's a word that describes your utter disappointment for blatantly disrespectful dick riders.
Dumbo: "Shut up dork"
thatboytweaking100%: "I thought you had something better to say. SMD while I SMH"