One day a father of a rich family took his son on a trip to the country with the firm purpose of showing him how poor people can be. They spent a day and a night on the farm of a very poor family.
When they got back from their trip the father asked his son, "Well, what did you think, son? How was the trip?"
"Very good, Dad!"
"Did you see how poor people can be?" the father asked.
"Yeah!"
"And what did you learn?"