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.
Used to describe the characteristics or behavioural traits of those behaving like, or who inherently are, a scumbag.
After many unsuccessful attempts at contacting his brother, he finally got through, only for his brother to claim he was too busy to talk, in the ultimate display of scumbagliness.