Years ago, I read a story in the readers Digest. I'll repeat it, below, from memory.
"My husband and I run a retail store, in the small tourist town of ####. One day some tourists came, in their car and parked out front. The one opened the door, and dumped a bunch of trash onto the parking lot. They came into the store. My husband, a locksmith, went out. He picked the lock on the trunk of thier car, and put the trash into thier trunk, and then closed the lid."