An imprecise unit of length. When used by a man describing the length of his penis, it means somewhere between six-and-a-half and seven-and-a-half inches.
Rico said he had eight inches, but you'd have to be generous to say six-and-three-quarters.
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