The machines sold only high-sugar/high-calorie items (i.e., soda, chips, and candy) with ingredients of highly questionable healthfulness, such as "monosodium poisonate" and "partially de-weaponized plutonium." When Bart Simpson got hooked on the machines' snacks (to the point where he refused all other foods), he quickly gained a large amount of weight, had a heart attack, and was sent to a fat camp to slim down and kick his junk-food addiction. However, the camp was very expensive, and the family was forced to turn their house into a youth hostel for extra income, in order to afford the bills.