How do you make someone fat in super Scribblenauts?
Use a fat potion on the person you want to make fat.
"And proud of it!" You could come back with, "I may be fat, but you're ugly and I can always lose weight!", but usually it is best to simply ignore someone who is so ignorant as to make such a comment. It is seldom worth the effort to respond to anyone that immature, and to make an equally insulting comeback actually brings you down to their level of rudeness.