This is a true story and it was on the news:
Rocks From Beach Catch Fire in Woman's Pocket - San Clemente, CA - May 16, 2012
O.o http://sheilaaliens.net/?p=703 "SAN CLEMENTE, Calif. (KABC) -- A woman literally burned a hole in her pocket from rocks collected on a family beach trip to San Clemente. In an Eyewitness News exclusive, authorities say the woman suffered serious burns.
The rocks contain various colors - some green, some orange. There were seven of them altogether, collected by a San Clemente family during a fun morning at Upper Trestles on San Onofre State Beach last Saturday.
"The daughters were playing with the rocks, and she took them away, and I guess basically, they combusted in her pocket due to friction," said neighbor Jacob.
Orange County Fire Authority Capt. Marc Stone said there were actual flames coming off the woman's cargo shorts.
"We found that a 43-year-old female did have severe burns to her leg, second- and third-degree burns," Stone said."
Read more: http://abclocal.go.com/kabc/story?se..._county&id=866...