The universe, as he understands it, is mostly round, somewhat oblong, and filled with food.

As time passes and he eats the food, he grows bigger. He understands this is the fundamental point, of himself and of food and of the universe.

But eventually, inevitably, it means he is the same size as the universe, and now there is no food.

This is a great injustice and a terrible thing. The universe is not allowed to not have food. This is definitely the worst thing that has happened, literally ever.

In anger, he attacks the universe.