Top Definition
A bump of muscle usually close to the elbow that is said to indicate if someone frequently masturbates.
Did you see Dave's beater's bump. . .that guy must whack off a lot!
by Rafael Lewis April 16, 2006
1 more definition
A lump of muscle on the arm, near the elbow that is said to indicate if someone frequently masturbates.
Some people joked that Carl whacked off a lot because he had a giant beater's bump on his arm.
by Rafael Lewis April 05, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×