In the Halcyon days before parking meters and attendants it was the job of the police to attend to badly parked cars.
One bobby got fed up with issuing tickets to a persistant offender who left his Roller parked in the same place every day with his dog in it, but, as he was a Freemason friend of the Station commander, got away with it each time.
One day, instead of issuing the ticket, the bobby pushed several pieces of laxative chewing gum (EXLAX??) through the partially open window of the car, which apeared to solve the problem!
Jim Carroll