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The time of day, month, or year when a bro needs a blow job
Derived from the latin abbreviation S.M.D= Suck Me Dickitus which translates into Suck my dick in modern day english.
Male: Yo honey, let me take those pants off
Female: Not now, Carlos, it's my time of the month
Male: Time of the month? Girl its SMD O'clock!
by llamajockey September 17, 2011