Top Definition
A penis that is exactly three inches long (while erect), no longer, no shorter. May also be spelled "3inchmonster" or "IIIinchmonster"
Baby I know I'm a little inadequate for your taste. But me and my threeinchmonster aren't going to waste
by Rahul S. January 14, 2004
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.