When I was 16 I was pulled over and got a "repair and report" citation for a loud exhaust. I had no money. So, I poked a hole in a potato and stuck it in the exhaust just before going into the police dept to have someone inspect my car. Cop came out, I started it up and it was nice and quiet. He wrote off the repair and report and when I started the car to leave I blew baked potato all over the parking lot.