Dumb Dumb Dumb teen with lighter

[Bill in NC]

Decades ago my family was on a walk in our neighborhood when we heard what we thought was a transformer explosion.

Turns out about a mile away some teens in a basement had cut open a large fire extinguisher and were busy filling it with black powder.

Then another teen lit a cigarette as they were coming down the basement stairs.

Only the teen directly next to the extinguisher was killed, but IIRC the home was condemned due to foundation damage.