I tried it last night, it didn't work through my jeans at least. Either it's a myth that you can actually light a fart, or I didn't eat the right foods to produce the right flammable gas mixture, or it wasn't a big enough fart, or I need thinner clothing (which I'm a little afraid to try).
They did do a thing where they tested to see if a porta-potty could blow up (due to the methane buildup) if you lit a cigarette while in one. If I remember correctly, the myth was busted, and they needed to pump methane gas in there for an explosion to actually occur.
A guy I went to college with was notorious for lighting his farts.. seen it done with my own eyes. I dunno what he was eating but he'd hold a match to his ass with sweats on and shoot a two foot flame out.
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Ingredients:
Whole oat flour, modified corn starch, sugar, salt, calcium carbonate, trisodium phosphate, colour, vitamins & minerals (ferric orthophosphate (iron), niacinamide, calcium pantothenate, pyridoxine hydrochloride (vitamin B6), folic acid, mixed tocopherols). BHT added to package material to maintain product freshness.
Crunchy Corn Bran: http://www.quakeroats.com/products/oat-cereals/crunchy-corn-bran.aspx
Ingredients:
CORN FLOUR, CORN BRAN FLOUR, SUGAR, OAT FLOUR, COCONUT OIL, SALT, SODIUM BICARBONATE, CALCIUM CARBONATE, REDUCED IRON, NIACINAMIDE*, ZINC OXIDE, YELLOW 5, YELLOW 6, RED 40, THIAMIN MONONITRATE*, PYRIDOXINE HYDROCHLORIDE*, RIBOFLAVIN*, FOLIC ACID*, BLUE 1.
Hmm...