I am always worried about lighters blowing up,My freind had a bic blow up in his hand....Well he was smoking something else and had the flame going for a long time,I guess it stayed too hot for too long and just blew up.Not as bad as what you got though.
I blew out my lighter once when I accidentally put a lit cigarette on my lighter and forgot about while playing street fighter 2.A huge geyser of gas went shooting in the air.