Gas on His Arm

There was a man at a gas station, pumping gas into his truck. While pumping he got gas on his arm. He wiped some of it off, then forgot about it. He paid for his gas and got in the truck.

As he was driving down the road, he lit up a cigarette, and the gas on his arm caught on fire. He rolled down the window and was waving his arm about, when he was pulled over by the cops.

The officer charged him for improper use of firearms.