Circus showman P.T. Barnum once ran an animal museum in lower Manhattan. People enjoyed the exhibit so much they would stay for hours, preventing others from entering. Finally, Barnum devised a way to rid the place of customers who overstayed their welcome. Over the cage of a tigress and her cubs he hung a large sign which read, “Tigress.” Over a doorway next to the cage he hung another sign: “To the Egress.” Thinking they would see another curiosity, people walked through the door and out onto the street!