A person who is overwhelmingly immense, whose shadow can create a "lipid eclipse", who decides to take up all four corners when told to hide in a corner, and who lacks self esteem.
Basically this is the ratio applied to foodstuffs, by fat people whereby whatever the packaging states as how many people the foodstuff serves is divided by a minimum of 2. Used frequently in the North of England......
Fatlady: Says 'ere this cheesecake serves 4 people.
Fatlad: Well using Fatlad's Food Ratio, as we are fat, thats 2 people in our case!