A person who causes you to lose the will to live just by being there. Someone so depressing that you can't stand being around them. Someone you never invite them anywhere because they always cause you to "bleak out".
Yeh, that guy at work is a total bleakatron, i hate talking to him.
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