Jon was showing off for an older girl by using his math skills. They went from 1 + 1 to 16 + 16. When they got to 16 + 16, Jon said, "32", and the girl, who looked to be about 12 or 13, said, "Nope, you're wrong, it's 28." Then she and her family left. I did tell Jon that he had gotten it right.