Both helium and ferret ointment are known to have this effect on The Cheat.
Homestar: Woah, Marzipan, check out that ugly bird.
Marzipan: Homestar, I think that bird is the Cheat.
Homestar: No way! The Cheat is one fine-looking young man. That is an ugly bird.
There are animated banner ads out there that advertise ways to trim inches off your belly. Because most of these ads are poorly animated, their portrayal of a person losing weight typically consists of an otherwise skinny person with a large belly "deflating" so to speak, rather than having realistic body proportions for their before and after weights.
We Are Our Avatars: Micheal takes after his mother. At some points, it's only made even worse: Michael ate over 1,000 burgers and had a harder time working it off. He then gained huge amounts of weight as a result of faulty nanomachines, to the point where even working it off would not work.