So, according to Michelle Obama, young people are all "knuckleheads." I don't know much about the context of that comment - it had something to do with health care and all that debate, which I know very little about. But I think she was arguing that young people should stay on their parents' health care plans because they're "knuckleheads." Regardless of someone's position on letting someone stay with their parents health care until they're 26, her reasons for pushing that are total baloney.
Mrs. Obama, you love to vacation, so here's an idea for your next vacation: take every single person in power who agrees with you about 18-26-year-old adults, and go make a tour of military bases. There are plenty of 18-26-year-olds there - are they "knuckleheads?" No. No, they are not.