when you poop or fart and you butt hole burns. not like tempature, but like hot sauce on your tounge, or when you throw up and it goes up your nose. like that exept on your butthole.
guy 1: *FARRRRRTTT*
guy 2: EWW that was a wet one! wasnt it?!
guy 1: OWWWW MAJOR FART BURN!
guy 2: what?
guy 1: it feels like i just farted out jalapinos!
guy 2: omg
The burning sensation one feels in their rectum after having been flatulent the entire day.
Navin: Oh man, I had Taco Bell all day yesterday, and now I have fartburn.
Food that makes you fart or have farts that leave a burning sensation.
That jumbo beef burrito gave me fartburn.
A feeling one gets when they pass gas after eating hot mexican food especially beans.
The hot beans really gave me a bad case of fartburn!
The fecal residue left in one's underpants resulting from overindulgence of food and/or drink.
"Man, I ate me some good ole beans and it gave me the worst fartburn! My wife had to bleach my underwear twice just to get the stains out."
when a fart is so strong that it "burns" the nose hair of those around you.
"Dude, you totally gave me fartburn with that one! Take your stinky self outside!"