Ruth would always reply, "I know Charlie, but that airplane ride costs fifty dollars, and fifty dollars is fifty dollars."
One particular year Charlie and Ruth went to the fair, and Charlie said, "Ruth, I'm 85 years old. If I don't ride that airplane I might never get another chance."
Ruth replied, "Charlie, that airplane ride costs fifty dollars, and fifty dollars is fifty dollars."
The airplane pilot overheard them and said, "Folks, I'll make you a deal. I'll take you both up for a ride. If you can stay quiet for the entire ride and not say one word, I won't charge you; but, if you say one word, it's fifty dollars."
Charlie and Ruth agreed and off they went. The pilot did all kinds of twists and turns and rolls and dives to try and earn his fifty dollars, but not a word was heard. He did all his tricks over again, but still not a word.
When they landed, the pilot turned to Charlie and said, "That's amazing, I did everything I could think of to get you to yell out, but you didn't."
Charlie replied, "Well, I was gonna say something when Ruth fell out, but fifty dollars is fifty dollars."