too much gas in the empty part of the canister, really, not enough air
most of the time, even before you shake it, a gas can will not explode even if you put a lighter right up to the open mouth, but there's a good chance once it starts heating up the air it can warm the gas and that will lead to a massive amount of boiling gas to pump out the nozzle and actually explode
i once set off a small explosion involving naptha (zippo fluid)... there was probably less than an ounce of gas in the pot but it was all boiling, and then i bumped the pot against the resistive elements and with all that gas spilling over the edge it caught fire and the whole ceiling was turned black and i had 2nd degree burn on my arm where it went off
not saying "don't be careful" but rather, retards will get away with this, until they don't
I had a similar experience as a kid. A retard (me) got burned. The thing is, its suuuuper hard to put that flame out when it gets on you.
My brother and I set our tar-based driveway on fire once. It nearly became a real problem.
yup, you have to smother it, that's what fire blankets are for. any blanket will do though, pretty much, so long as you aren't near another big fire and it's not acrylic
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