The act of a boss or manager scheduling you for certain shifts so that you avoid working along side someone you are trying to have sex with. Cock blocking you by giving you bad shifts.
Man, there's this new girl at work who is so hot! But I never work with her, my manager is always shift blocking me.
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