Top Definition
a fistula is any type of necrotic hole from one thing to another on the body. Like a bladder to anal fistula, or vaginal to anal. Each more disgusting than the last.
Jesus, that guy had a fistula so bad, that whenever he tried to have sex, he shat out his dick.
by Jake April 21, 2004

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Dracula's gay brother. You know, the one that enters your room late at night with a bottle of lube and that cheeky grin that says, 'That's right. I'm all about the ass.'
Did you hear about Donny? Word is that Fistula got to him the other night! Hasn't been able to sit right for a few days!
by Hektik Slice September 05, 2012

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when someone sticks a fist in your rectum, then, when puss starts coming out of your anus, you now have crohns deasese. consult a doctor for further instructions
dude i got Fistulas last night.
by Fry-Guy June 18, 2010

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A big-ass thing that grows from someone's ass.
Dude can't sit down cuz of the huge fistula in his butt.
by polishman September 28, 2003

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