When I was about 15 me and 2 of my friends were burning books in his backyard. I had the task of holding the water hose and spraying out any fires that spill out of the grill (Older grill, not electric or w/e). My friend Josh was feeding paper and books into the fire and Jonathon was the one pouring gas on it to keep the fire going. The problem is, when Jonathon was pouring gas on it, he let it pour a steady stream. Therefore, the gas tank caught on fire. In my defense I had no idea how long it took for gas tanks to blow up when catching fire. So instead of spraying it out with the hose I was holding, I took off running and screamed dude run! They didn't hear me, but when Jonathon turned around I was about 3 - 4 houses down watching them run around like chickens.
Jonathon was able to put it out. It was hilarious after though.