Top Definition
A "Jack Dempsey" refers to one beating his meat very aggressively, as the legendary boxer Jack Dempsey flogged his opponents.
Dude, I got so excited over that midget porn I was watching that I stole some face cream from my sister's make-up bag and gave myself a "Jack Dempsey". Now my pecker is sore.
by Midnight Stroker July 24, 2008

Free Daily Email

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

Emails are sent from We'll never spam you.