Top definition
The stimulation or manipulation of one's own genitals with a cake, especially to orgasm; sexual self-gratification with a cake. The most popular cakes used in this manner include cupcakes, wedding cakes, and birthday cakes.
Dude 1: Hey man, let's each get a bag of Cheetos to fuck on the way home.

Dude 2: Naw dogg my brother's wedding was yesterday, I'm in for some prime cakesterbation.
by The Don2 September 19, 2007
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