Top Definition
n. 1. The act of two cells con-joining rather than breaking apart.

2. When you manage to have sex with yourself. An extreme form of masturbation.
I suffer from internal incest. My doctor said that I'm so white trash that even my cells have sex with their sisters.

Jimmy is a product of internal incest, which would explain that third ankle.
by qwertypod February 03, 2004
1 Word related to internal incest

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.