A subsiquent amount of douche (most likely from morethan one person) which is piled together in a way that it looks as if it is a cake made of douche. It also is used as a negative way of "dissing" another chum pal or even a way to pick on someone. It is closely related to the words faggot and fag
An entity that is so full of the quintessential essence of a douche that if the following recipewere followed:
"Mix 1 part cake mix, 2 eggs, 2 parts and 70 parts douche. Put in the oven for 35 minutes at 500 degrees, stirring halfway."
The previously mentiones entity would be yeilded by the oven.
Rave is such a douche cake for shutting the server down for a stupid forum game.
A douchebag would be someone like Tiger Woods, Bono or any of the members of Stone Temple Pilot. A Douche Cake would be someone like Mel Gibson, Tom Cruise, Arnold Swarzenegger, or any of the members of Hootie and the Blowfish.