Fat max theory
The theory that any individual can only absorb a certain amount a fat within a given time span. Therefore, once a person has reached their 'fat max' they will be able to continue gorging themselves without any further detrimental consequence.
After eating a full order of mozzarella sticks, potato skins, and spinach dip at TGI Friday's, Sara, an avid supporter of the fat max theory, realized that she had most likely reached her fat max for the night and therefore felt completely guilt-free when she ordered the cheesecake.