In 1918, over 100 waiters were arrested for poisoning bad tippers in Chicago. This was all started by Michael "Mickey" Finn when in December 1903, was accused of giving drugs to the customers and robbing them in an alley after leaving the restaurant. He was the manager and bartender of a restaurant called Lone Star Saloon and Palm Garden Restaurant which was closed on December 16, 1903. This is the origin of the phrase "slippin someone a Mickey." His legacy didn't die there, though. On June 22, 1918, over one hundred waiters were taken into custody over the practice of poisoning clients who didn’t tip enough. They each bought a packet of powder for 20 cents through the waiters union headquarters and referred to it as “Mickey Finn Powder." The powder would cause dizziness, headaches and could be lethal in some cases.