Window Cleaner

Riddle: A window cleaner is cleaning a window on the 25th floor of a skyscraper when, suddenly, he slips and falls. He has no safety equipment and nothing to soften his fall, and yet he is not hurt. How can this be?

Answer: He was inside cleaning windows.

Source: https://www.riddles.com/3845

A window cleaner is cleaning a window on the 25th floor of a skyscraper when, suddenly, he slips and falls. He has no safety equipment and nothing to soften his fall, and yet he is not hurt. How can this be? — Window Cleaner by Luc Fredrickson Riddle