When you take a poop and it kinda burns your butthole.
Dang guy that crap gave me fire butt.
by fatpat March 29, 2006
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1. the sensation that comes when one eats some spicy food (maybe some korean barbecue or a volcano box from taco bell) and takes a dump later on during the day, and feels as if his or her butt knew that the food was spicy.

2. a feeling burning around the anus after eating spicy foods and eliminating the resulting stool

note: the foods causing fire butt are not limited to spicy food.
"Hey, how's it going"

"Man, I had some volcano nachos this afternoon and I just took a deuce. Feels like my ass is on fire."

"You, my friend, have fire butt."
by kevlarcasm December 16, 2009
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A drinking game where each player must chug an entire beer. First both players each place one end of a piece toilet paper in each others butt(perferably 5 squares in length) The middle of the toilet paper is then Lit. Each player must finish their beer before they can pull out the toilet paper and may not start to drink before the fire is lit. (Also known as Fire in the Whole)
Luc: hea Jon I hear you have a challenge in butt fire game?
Jon: Are you challenging me or is Chris?
Chris: no way in hell my ass hairs are burned from butt fire game last night.
by butfiregame December 12, 2007
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