Was fidgeting around with a lighter when I thought I could get the flame bigger with more pressure. So I thought it might be a good idea to use the refill bottle for that. While preparing it I thought, if that explodes I might burn the house down and maybe lose a hand.
For some reason my curiosity got the better of me and I went ahead. Of course it went wrong, luckily only the lighter exploded and all the gas in the air around it, I remember it as a bright flash of heat accompanied by a bang. I thought, I must be disfigured now but luckily only the hair on my arm was burned off and my eyelashes a bit singed.
So that’s probably one of the dumbest dangerous things I did. Was a teenager at the time though.