The Teethbrush
Research had been going on for many years in regard to the invention of the toothbrush. Researchers knew the purpose of the device but wanted to know and acknowledge the originating location.
After a very long and exasperating study, the researchers came to their conclusion about the origin of the toothbrush. It was decided that the brush was invented in Maine.
Intrigued by the discovery, the media asked the researchers how they came to this conclusion.
The researchers all agreed that it was simple deduction: "If it was invented anywhere else, it would have been called a teethbrush."