Top Definition
The steamy mixture that ejects from the penis after marinating it in a bowl of Jell-O
1."Let's watch Bill Cosby"
"Naw let's make Cosby Jell-O"

2. A girl at a bar asks you to buy her a drink. In response, "how about a Cosby Jell-O? Bitches love Cosby Jell-O."
by Cosby Sweater June 30, 2013

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