Ken, what about the second time?
OK David here it is. This time it was in the early 90s in my driveway.
It was the hottest, most humid time I can remember while I lived in the San Diego area, inland about 20 miles, so the ocean never moderated the weather where I lived.
I was working on several projects at the same time. I needed to cut on a steel frame in the drive way. I had to cut some of it down to size . Most of the cuts had to be made kneeling almost under the frame and made in a vertical up direction. I was using an abrasive blade in my circular saw.
I had not yet started cutting just getting set up for it. It was really hot and humid, just nasty. Especially in the sun. So I went into the garage to work on some stuff in there out of the sun. I was cleaning some parts with fuel and kerosene. Then oiling them up real good. I had ran my hand through my hair a few times. I had obviously left a fair amount of fuel and kerosene in my hair plus oil. I did not care. I was going to get my jobs done and go take a nice cool shower.
I then went out to the driveway were I was already set up to cut. I did wear ear protection and eye protection, but no cap. Just shorts and a light T shirt. You know the shower of hot sparks a circular saw abrasive blade will make going through steel. All those spark showers were going straight up and then coming down on me. My arms were sting like hell. My exposed back of the neck was stinging. Those spark showers are bloody HOT.
Well my head got hot also and was sting from the shower of sparks. Now I am a very stubborn and determined man. Not given to stopping or quitting. So I did not stop or pause. I kept the saw in motion. The faster I could get done the sooner I could go cool off.
Well my head was really getting hot now. Most of the spark shower was coming down on my head. And then it was like OH HOLLY SH_T! HEAD HOT! DAMN YOUCH!! So now I am using my left hand to try and pat my head. But my head feels like it is burning. Hurting like hell! It was a really old saw that I was using, no blade brake. Took for ever to stop spinning. And because the cuts were so awkward I had wired the blade guard open, so it was not like I could just sit the saw down. I had to hold that thing, not twist the blade because it would shatter and pieces would go ever which way. So I am trying to control and hold this blasted stinking saw while it slows down and pat my head at the same time with my left hand.
It was around that time that the realization sunk into my head that my hair was on fire. I laid the saw down upside down and took off running for the dogs drinking dish. I dumped it over my head and then turned the hose on and and soaked my self.
It was after that that I heard my neighbor across the street laughing hysterically. Yeah he was on the ground rolling around laughing out of control.

So I picked up a rock out of the drive way and threw it across the street at him. And then another. A few of those and he retreated to his own garage. But I could still hear him laughing hysterically in there.

For my troubles I had a bald spot with a heck of a sunburn on it.
Did I ever mention that I HATE FIRE!
Ken