Mr. Smarty Pants Knows

Ernest Hemingway made his martinis really cold by using tennis ball cans to make dense tubes of ice.

The word "shark" likely comes from the Mayan word for the fish.

The Santa Rita No. 1 oil well owned by the University of Texas was so named because Saint Rita is the patron saint of impossible causes. Some N.Y. stock salesmen had encouraged a group of Catholic women to invest in it and they became worried about their decision and consulted their priest. The well came in on May 28, 1923.

Mark Spitz won a then-record seven gold medals for swimming at the 1972 Olympics. Although most swimmers are known for going as hairless as possible, Spitz sported a mustache, claiming it helped create a pocket of air to help him breathe.

According to the American Journal of Epidemiology, you're twice as likely to suffer a head injury when walking as you are when riding a bike.