A fool, idiot, moron, retard.
You left the food in the oven, you butt fungus.
von Joel Joseph 7. April 2006
A disease of the ass
Brandon has butt fungus and he can't get any dates!!!!
von brandon dinglehoff 17. November 2005
musrooms or moss that growing in or around the rim of your asshole.
Paul Durso has gnarly butt fungus.
von johann smelts 26. Januar 2009
A slang term for "Chronic Anal Candidiasis", or in infection caused by a fungi growth on the anal pore. Not unlike a yeast infection, the symptoms include severe itching/burning and a smelly fuckin' white discharge.
"Dude, I can smell your buttfungus...you should have that looked at."
von Colonel Turdburglar 22. Juli 2005
Discusting, moldy fungus, growing around, on, or inside a person's butt.
Doctor:I had a patient come in today with some nasty butt fungus, he asks if I would clean it for him. I said" Hell no!!!!!!!!!!!!"
von JOOOOOOOOOOSE 17. Januar 2010
The redness of the arse.
OMG you are as red as the irritating skin from the babies diaper that caused buttfungus!
von Optical Illusion 25. Januar 2011