A man in Galicia (Spain) forgot a lighter in a pocket, filled with gas. When in the dryer it caused an incredible explosion that would have killed him, saving his life by seconds.
I cannot believe it was actually a lighter; I blew up a fair number of lighters during my pyromaniac youth and never witnessed anything remotely like the explosion in this video. You get a pop and a flash - it's not especially dangerous. This looks like it had to have been a much larger mass of fuel inside a pressurized container.