Top definition
The victory cry of Bill Cosby, as well as many of his fans and followers, stemming from his humorous speaking of the word jello, in regards to the desert. He eventually adopted it and began using it when he defeats an opponent in everyday life, or an online game.
L33TSniper: Aww I cant believe you beat me like that!

Cosby10: JELL-OWNED
by Victor Frieze September 29, 2009
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