Urban Dictionary: Definitions by SeizurgasmDude

Back Knee

When a person is so fat that the back of their knees look like the fronts of their knees

Dude did you see her back knee?
Yeah man, that shit was gross.

A man or woman who is a money-whore, or somebody who just can't stop spending money.

Woman: Look at this new Prada bag I just bought
Man: Why are you such a Marsi
Woman: Why, I never

Marsi by SeizurgasmDude February 21, 2011

The action of having a seizure when one reaches orgasm.

Dude: Totally banged her last night
Other Dude: And how was it

Dude: Amazing, I made her seizurgasm
Other Dude: Sweet man