yup. You would think being humiliated by being too fat to enjoy a roller coaster ride would be the wake up call and that person would go "hey, I'm going to see a nutritionist/join Weight Watchers/download MFP/buy a scale and weigh portions/throw out all the junk food and replace it with fruit and veg/give up soda for water or green tea/SOMETHING FFS because obviously what you are doing now IS NOT WORKING"  alas, so many people get so many wake up calls and  still ignore them though.