The incredibly painful stinging sensation one receives on their anus, usually caused by indigestion and/or spicy foods.
I love hot wings, but they give me firebutt.

Sorry honey, we can't do anal tonight, I've got firebutt.
#butt #butthole #anus #mexican #hot wings #spicy
by CritzCrakka August 26, 2006
Top Definition
When you take a poop and it kinda burns your butthole.
Dang guy that crap gave me fire butt.
#crapping #diarrea #pooping #dropping a duece #dropping some weight
by fatpat March 28, 2006
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."
#anus #fire #ass #nachos #volcano #butt
by kevlarcasm December 15, 2009
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