the definition of
suck mah d means for one to get down on their knees and
suck one's d (dick).
Suck mah d can either be feminine or masculine. You can say suck mah d in most
context's either when your pissed of or when someone is being a douche bag. Suck mah d can also be a spur of the moment kind of saying, kind of like hello or goodbye.
Boss: Hey you,
know your role!
Employee: Well how about you
suck mah d!
or
Person 1: "Exscuse me I need to get by"
Person 2: "
Suck mah d bitch"
or
Person 1:"Hey whats up"
Person 2: "Suck mah d"
Person 1: "You are very hostile"
PersoN 2: "
Shut it or suck mah d