SUCK MY FUCKING DICK BITCH. you can also keep it lower case if you aren't truly angry. But this valuable term is best used as a conversation ender. kinda like. "You started this shit!" then you'd say, "Well I'm ending it BITCH! SMFDB!" over.
John- "You up baby? I swear it wasn't what it looked like,"
Jackie- "No. SMFDB!"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi