I Did Not Know That du Jour

Line from Seinfeld once saved a man from getting eaten by a mountain lion.

McCormick hefted his bike over his head and started yelling at the lion but it kept coming. Backing up the mountain with the lion following, McCormick decided to use a line oft-heard in the Jerry Seinfeld show. At the top of his lungs, he yelled: "You! You! You want a piece of me?"

Momentarily startled, the cat gave McCormick time to peddle frantically back to his car.