The ridiculousness is in the male character's interest in the fatty as a teenager. It used to be the "plain girl changes her style to look stylish and confident" that would serve as the female character in this kind of tale, but these days, we gotta teach girls that it's just fine to be fat, and hey, that guy actually liked you back when you were a butterball! Only in cartoons. Teen guys may crush on plain girls, but they don't on fatties. Ever. Trust me. This video is more political correctness and would not happen in reality. At least part of the implied message is that it's fine to be fat. It teaches girls things untrue, even if the part of the message you're taking from it is true.