A person with a weak constitution, little to no redeeming qualities, few positive attributes and no apparent skills or talents.
I emphatically and repeatedly informed my sister's boyfriend that he was Dookiestain McClane as he frequently broke eye contact and weakly smiled in silence having neither the balls nor the grounds to contest such an assertion.
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