You should have stayed out of the haunted house, because you accidentally picked up a passenger - you are being possessed by a fat ghost that wants to make your body fat. While it's not yet strong enough to take full control, it whispers in your mind, and occasionally takes over, causing you to eat more. You find yourself waking after these periods of possession bigger and fatter than before, and you have no idea how much time has passed. The fatter you get, the more control it has. The spirit may soon take complete control over you.