You were born as a skinny animal, you see a feeding machine and scientists feeding a bear making it obese with nacho cheese.

Your cell is 104, you see fat animals glaring at you but look away. You become next. they open the cell and pull out the feeding tube, they fill it with nacho cheese as well.

They place the tube in your mouth, and they begin you pump.. and pump.. and pump..

you gulp through.. and through.. they stop until you are obese. You're only fat for now..