Top Definition
Upon viewing of the anus close up during flatuation it is apprent that the inner ass protrudes slightly and pulsates or vibrates.
I was looking in the mirror yesterday for a close up of my fart and i saw The Pulsating Membrane.
by The professional December 03, 2004

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.

×