The traveling salesman's car broke down in the country and he knocked on the farmhouse door. When the farmer opened the door, the salesman said, "Sir, my car has broken down, and I was wondering if you might be able to put me up for the night?"

The farmer said, "Why, sure, but you will have to sleep with my son."

The salesman hesitated then said, "Excuse me, sir, but I think I'm in the wrong joke."