Dr. Ralph and Murphy were walking along the street when they saw an old man walking with his legs spread apart. Dr.Ralph says to Murphy: "I'm sure he has Petry Syndrome. Those people walk just like that." Murphy says: "No, I don't think so. The old man surely has Zovitzki Syndrome. Since they couldn't agree they decided to ask the old man. They approached the old man and Dr. Ralph said to him: "We couldn't ignore the way you walk, but we couldn't agree on the syndrome you might have. Could you tell us what it is?" The old man said: "I'll tell you, but first you'll tell me what you think." Dr. Ralph said: "I think it's Petry Syndrome." And the old man said: "You thought, but you're wrong." Then Murphy said: "I think you have Zovitzki Syndrome." And the old man said: "You thought, but you're wrong." So they asked him: "Well, what do you have?" And the old man said: "I thought I needed to fart. I thought, but I was wrong."