Helping Gonad lose weight

It is fun to run around the house with a long cord or headphones and make Gonad chase them. Soraya and I also tried aversion therapy, which consisted of holding a large slinky over him and letting it hit his back whenever he ate. Sometimes he'd go on eating but look very angry about it. Sometimes he'd try eating at a different dish. Sometimes he'd just slink off into a corner. It made us laugh a lot. I don't think it made any change in his eating habits, though.