{dooshbergA} 1. (n) a Russian terrorist from the acclaimed movie 007: Casino Roy L on Google Video.
2. (n) a big fucking douche derger

Someone who at first meeting shows a little bit of their douche self, but on getting to know them better, the full extent of their doucheness becomes apparent. (Likened to the iceberg that only shows a small fraction of its total size)

1. When somebody seems like a douche at first, but then is proven to be an even bigger douche than expected
2. Someone who hides 90% of their douchiness under their exterior
3. A jewish douche

A jewish douchebag.

Being a giant Douche, So to speak, as large as an Iceberg.

A doucheberg is a guy (or sometimes girl) who seems like an awesome, thoughtful, sensitive person on the surface, but underneath they're a ginormous, iceberg-sized douchebag. You usually don't find out until it's too late.

A special kind of douchebag that resembles an iceberg in its douchiness.

lameness of Titanic proportions