YEARS ago, my dad was going to give me a demonstration on the flammability of gasoline via a back yard brush pile. Poured the gas, got back a "safe distance" tossed a lit match in the pile's general direction, was immediately engulfed in the LARGE "FOOM!". After running back, dropping and rolling, just in case, he looked at me and said "ok, that was a little more than I was counting on but you get the picture."