Top Definition
The extreme pain caused from an Enterobius vermicularis infection.

Symptoms include itching and irritation of the anus or vagina, digestive disorders, insomnia, irritation or nervousness. The worms come out of the anal opening to lay eggs at night. The eggs are not affected by disinfectants. It passes from person to person. The eggs can be passed by direct contact, or through sharing of food, toys, etc.
Wormswitchity is why you NEVER go ass-to-mouth.
by masteroftheuniverse1234 July 27, 2009
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