Top Definition
When you see something that scares or disgusts you so much... that you clinch your buttcheeks so tightly, that not even a worm could get inside.
That new Nitemare on Elm Street movie gave me worm butt!
by Brownie ESQ July 08, 2010

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.

×