Top Definition
The stage name Bill Cosby gives to his bifkin, when he performs a magic act at children's birthday parties.
Bill Cosby: "And for this particular trick, I'll need some help from my assistant, Grundalf the Black!"

Grundalf: "Heeeyy heeeyy heey!!"
by Sandy Highman, PHD July 22, 2011

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The Urban Dictionary Mug

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