On the first working day of the New Year, Peter told his friend Paul, "You won't believe me. I participated the New Year's Eve party at John's. And there I recognized that they have a golden toilet!"
"No, I don't believe that," answered Paul. "John likes to act like a rich man, but he couldn't afford a golden toilet."
Peter said, "Why don't we stop by his home after work so you can see for yourself?"
After work they went to John's home and rang the doorbell. Mary, John's wife, answered the door. Peter said, "Hi Mary, Paul doesn't believe you have a golden toilet. Could we come in so that he can see it himself?"
Mary turned around, and shouted into the house, "John! We know now who shat into your tuba on New Year's Eve!"