Dee Cake

DEE is an acronym meaning "Dead Earthworm Entertainment", an obscure Las Vegas show that involves a man eating over 9000 earthworms and then vomiting them up and throwing them at the audience. People now use "Dee Cake" to describe something incredibly repulsive and stupid. The cake is added in to express lameness.

Will: Look, I am cool!
James: Shut up, you Dee Cake.
Will: :(