20+ years ago I liked to BBQ outside my condo - 4-5 days a week.
I would often make a “tray” of of aluminum foil, double-layered, joined to another group of sheets, folded edges lifted up.
Put in some cooking oil, sliced onion, green peppers, etc.
All going fine - just fine.
Then I reached down with a metal spatula one day to separate some of the vegetables.
Went right through the foil - both layers.
OOPS
Flames jumped up at least 3 feet high. People driving by in the complex got a little show, LOL.
Oops
There should be a grill thread. Before I was married - 40 years ago - my brother came up for a visit. I set up a grill and being really stupid and out of lighter fluid I put gasoline on the coals. There were some big flames with a boom to go, the bottom part of my shirt singed across the bottom and I quickly jumped back and put it out. Lucky!