In almost all cultures people greet each other, exposing their front teeth.

If you place a tooth in a glass of Coca Cola, it will taste sweet, with a slight hint of front tooth.

In the 17th century Isaac Newton discovered that his front teeth couldn’t defy the laws of physics, especially not in high acceleration against a brick wall. 

There is not a single portrait in which Newton smiles with his mouth open. 

Albert Einstein’s front teeth on the other hand always stayed at the same place, which only proves how highly intelligent he was.