A college professor is explaining to his class that pleasure is a mental state, and that many people overlook the things they already have.

 

He says, "A man who has developed a true sense of appreciation¹ can enjoy a good bowel² movement as much as having sexual intercourse³."

 

One student stands up and says, "Professor, either you don't know how to screw, or I don't know how to poo."

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