This article is from the Urban legends FAQ, by Terry Chan tchan@dante.lbl.gov and Peter van der Linden linden@eng.sun.com with numerous contributions by others.
T. Fin-de-siecle Frenchman,Petomane,got rich farting as music hall act.Fartist.
U. Blowback (blowforward?) from ignited fart, singed frat-boy's intestines.
U. Vet cut vent-hole in cow's flank, lit escaping gases, burned down barn...
...the veterinarian known as "James Herriot" claims this happened to him.
Tb.A patient's intestine exploded from cauterization during surgery due to gas.
T. A patient's intestine exploded during a colotomy.
 
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