Worm Butt
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!
butt worms
n. worms, normally nocturnal in nature, that enter and exit through the anus
Last night my butt worms peeked out to say hello.
Butt Worm
Sticking ones finger in the anus of another while they walk up the stairs. Usually accompanied by a wiggling motion and shouting "Butt Worm!"
I was walking up the steps and my girlfriend totally Butt wormed me!
butt worm
A Butt Worm (or pinworm) is a parasite often found in feces, and the eggs can be spread about very easily upon contact. Having Butt Worms often leads to itchy/crawly sensations
It's a good thing I don't work in the stables, I don't wanna get any butt worms.
mexican butt-worms
Mexican butt-worms are what you pick up in mexico after eating from a taco cart or tamale stand that is less than sanitary. They are also different from other butt-worms because they wear sombreros.
Did you hear about Steve's trip to Tijuana? He got a bad case of the mexican butt-worms after eating at a filthy taco stand.