Any fart that burns your ass on it's way out. Usually happens after eating very spicy foods and usually smell extra horrible. NOTE - the Fire Fart does not require a lighter, matches, or any other ignition source. For lighting your farts on fire please see "gay fraternity stunt".
After eating all those hot chicken wings, I laid a fire fart that burned a hole in my car seat.
3 Chili Dogs
1 Six-pack of Beer
1 Bic Lighter.
Eat the weenies, drink the beer, ignite the lighter, place it up to your ass and make sure the cat is out of sight. WARNING: Do not try this while in your underwear.
"P. U. I just blew the lid off my house with that fire fart."