Not so much telling people, but true story. In high school, I was in the marching band. One day at a football game, there were some sirens. Word came down from the tuba players (top of the bleachers) to come up and see what was going on, so the whole band swarmed to the top of the bleachers to look out over the parking lot. Two cars were on fire. At the next break in play, the announcer asked for the owner of those two cars to meet the firefighters at the entrance to the field.
Apparently one group of people was tailgating in an empty parking spot and instead of actually properly disposing of their coals, they just put a piece of cardboard on top of them. And then walked away. Someone else parked in the parking spot on top of the burning coals, and both of their cars caught fire. As a band member it was epic to watch them burn, but I can't imagine how they explained it to the fire crew.