Reminds me of what happened to the guy who owned the cottage next to our neighbour's cottage at Amberly Beach when I was a kid. The cottages were down a bank from the road, with the cottage roof just above road level, and parking at the road. The wife was doing some painting while the husband was doing some roof repairs. She washed out the paint brush with coleman fuel and dumped it down the hole in the outhouse. Husband came down from the roof for a "dump" and a smoke.. He's sitting in the outhouse and lights his cigar, then drops the lit match down the hole,, between his legs - igniting the vapours in the pit You can guess the rest........
Then, about a week later he got back up onto the (single plain "shed" style ) roof to finish his repairs, tying a rope to the back bumper of the car up by the road, using it to keep from sliding off the roof by tying it to his belt. The good wife decided to go in to the store at Point Clark to get fresh bread and milk, and pulls the car out of the parking lot, launching poor hubby over the roof and into the parking lot where he had his still tender backside dragged through the gravel until wifey figured out what had just happened..
He said if he didn't know her better he'd have swaorn she was trying to collect on his life insurance policy!!