Fly

Zahra was an old lady.She traveled often and she wasn't afraid of flying. One day she was going from Tabriz to Qom in a big plane. There were a lot of empty seats on it. Zahra's seat was near a window. There was a young man on the other side of the aisle.He was near a window,too. Zahra looked at the young man several times. "He's always looking at the engine outside his window",she thought.She got up and walked around in the plane for a few minutes.Then she sat down and looked at the young man again. "Yes" she thought,"he's looking at the engine all the time." After half an hour Zahra went over to him and said, "Take a walk around the plane, young man. I'm going to watch that engine for you for a few minutes."