Scum Troll
Hated much like the well-known internet troll, a scum troll is the lowest form of human life. Can be used interchangeably with douchebag, or even combined for an additive effect: scum troll douchebag (STD)
Mike is such a scum troll.
That douchebag in the next cubicle farts all day long, he's such a scum troll.
That douchebag in the next cubicle farts all day long, he's such a scum troll.