Top Definition
Ask an unsuspecting victim if they have seen a 'beating cat's heart', followed by exposing one's testicles and pumping in and out of one's fist to mimic a beating heart.
Jeffrey: Hey William! Have you ever seen a Beating Cat's Heart?
William: I don't believe I have Jeffrey, please enlighten me!
by Balzak T. Bagger January 14, 2010

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