Samuel was out for a walk and it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this be?

Why this works

This riddle plays on the expectation that Samuel has hair, leading us to wonder how he avoided getting wet despite being caught in the rain. The twist is that the phrase "not a single hair on his head" reveals that Samuel is bald, meaning he has no hair to get wet in the first place. This clever use of words shifts our focus from the implications of being caught in the rain to the surprising fact about Samuel’s baldness, making the answer both unexpected and amusing.