A term solely used to describe behavior or actions that induce your rage (and rightfully so) when you are in a setting where cursing would be entirely improper.
Scumbaganitis is a medical condition known to many where the infected individual will have scumbagish qualities at all times. Such qualities include whining, crying, menstral cramps, jewing others over, and placing blame upon others for what the have done wrong.
Did you see Eric last night? He must have a severe case of scumbaganitis with the way he was acting.