I know you can just hop in the back and run. They're called "bandits" I'm assuming he didn't qualify for any race. Unless he's some miracle PreFontaine type.
If he keeps eating a dozen raw eggs everyday, he's bound to get a massive case of salmonella poisoning. That should easily take off 40-50lbs....as long as he lives through it.
I'd dispute the poisoning part , unless significant kitchen hygeine has been ignored. That been said, bulimia is a surefire path to weight loss.......i tried to do the "rocky" trick once, "puked my guts up" would be an understatement. Ive heard of a condition, caused by extensive bee stings, actually causing obesity, anyone heard of that? Not dissimiliar to normal allergic reactions, except it mess's up the liver, or thyroid, or something to do with weight gain. Anyone ever heard of that? Im too lazy to look it up myself.