Doucheberg

A doucheberg is a person that's such a huge douche, that what you see, you're still just barely scratching the surface. All you're really seeing is the 10% of the douche that's on the surface, and that there's still a whole other 90% douche under the surface, that you still haven't seen.

John is such a doucheberg that the day after a first date, he called her at 2am, drunk off his ass, so she could pick him up and also asked if he could stay at her place.