The combination of Joanie and Snakey's contribution, reminded me of one of the nefarious practices carried out by us as kids on "Mischief Night." We used to wire a kipper on to the exhaust of a car and then stick a potato up the exhaust. Yes, when observed from a distance, trying to start the car eventually resulted in a big bang, and we derived enormous amusement from thinking about the smell of a smoking kipper pervading the car. Ah well! Hooligans or just bl..... little criminals.