When you become so confused and flabbergasted that you just sit down on the spot and masturbate.
by Bassman150 September 15, 2011
1 more definition
When a man with a big big belly grabs, shakes a giggles his belly while at the same time fakely moans in pleasure. A false substitute for masturbate.
Mark wanted to show his pleasure from the situation, that he lifted up his shirt, grabbed his belly and began to flabberbate.
by Chunkyc September 15, 2006