My mom flew with me once. She was very nervous about flying in anything after 9/11 so she said she would go for a short flight with an emphasis on short. The flight went well and as I was setting up for the landing, I grabbed the carb heat and said, " This is the wing tightener. I need to make sure they are on nice and snug for the landing." She replied, "Really? I always thought that was the carb heat. Your dad tried the same thing 30 years ago, dufus."