Eggs are high in protein because of sperm content.

N: I'm so angry now if I swallow a egg, it will come out boiled.
J: You should control the temperature abit, then you will have a chick.

So the thing here is, J thought that all eggs are the supermarket is already fertilized, just that the factories put the eggs into the fridge of some sort immediately after it is laid. She thought, for the past twenty years of her life that all eggs that are laid, are fertilized and the very reason why it is not hatched is only because it is not incubated.