beat the cat

Female masturbation.

After a hard day at work, Amy decided to go home and beat the cat.

by Doug Roberts March 22, 2007

Beating Cat's Heart

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