Having big tits on a fatty is like bragging about having not having to work on monday when you're unemployed.  While it is true, it's nothing to be proud of or feel good about. Another comparison I've read is that big tits on a fatty are like bragging about a fast car, because it's currently being driven off a cliff.  While also technically true, nobody would want to be near it and it's nothing to aspire to be like.