This will be my team image. I've tried to light many farts without success. All I did was blow out the match or lighter. I know it can be done however, my old frat brother Yak burt off his dinkleberrys and I was there to smell the aftermath.
Burnt hair and fart gas is not a pretty smell. If your out there Yak, this ones for you.
EDIT: Notice how Yak was a wallet guy (the right pocket) I warned him how this may develop into back problems to no avail.