I was at an xmas party one year where the workshop boys did this with an upturned 44 gallon drum. It was the loudest bang I’ve ever heard. I thought we were under some sort of attack.
They expected the drum to launch a little but what actually ended up happening was the upturned metal bottom blew off and launched a LOT punching a hole in the workshop roof. It’s a miracle that nobody was hurt (their hearing probably was). Somehow they didn’t get fired.