This thread reminds me of an old Bill Wattenburg late night radio show. One evening someone phoned in asking if his plan to cut up an old gas station tank with a torch would work. Bill replied that this would be very dangerous, as even an old tank that had been sitting around for awhile still had hundreds of monolayers of gasoline stuck to the inside, and would probably blow up. Next night the guy called again, saying he had it figured out. His plan was to fill it with water before cutting. Bill told him that the water would keep the steel from heating up to where it would melt from a torch, even with a localized flame. The next week someone else called in and asked Bill if he remembered the guy. Yeah, said Bill. The caller said the guy decided to ignore Bill's advice and tried taking a torch to the old tank.

It blew up.
Darwin Award winner.