While browsing through the bikingbis web site, I read about a reference to a guy whose biking shorts caught on fire. Hope it's okay to quote it here:
Hot pants
Polish police are baffled after a cyclist was badly burned when his trousers burst into flames.
Mieczyslaw Jasinski, 55, told doctors he smelt burning and looked down to see his trousers had caught fire.
He jumped off his bike and rolled on the ground trying to douse the flames but suffered second degree burns to his legs, back and stomach.
Passers-by spotted him lying at the side of the road in Koroszczyn, still smoking from the tattered remains of his trousers and groaning in pain.
A police spokesman said: "Witnesses said he was like a flaming human torch cycling along the road.
"We do not know how it happened but we have heard that it could have been caused by a reaction between friction as he cycled, sweat and the material of his trousers."
[taken from Ananova site]
