I'm thinking as hard as I can and just can't remember anything I've done wrong in the last 90 seconds. I'll see what my wife has to say and check back later.
My dumbest move involved using expanding foam to seal a gap between the floor and wall in a cabinet around the corner from a gas water heater. The cabinet I was working in wasn't sealed at the back like I thought it was. I was trying to use up what was left of the can before it dried, and the combination of propellant and a pilot light never crossed my mind. Good thing I was wearing a hat. By the time I realized what happened it was all over, except for the smell of singed arm hair. That is why that warning is on them cans, for people like me who don't read them.
