The black scourge of Walgreens. An acronym for the type of thing which a select group of brokecollege students are forced to engage in. Can also be a product of suffocating boredom.
You: I'm pregnant and I have a midterm tomorrow and I'm scared.
Me: Shut up whore! Double F S B!
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