What is the fear of cooking called?

Mageirocophobia

Where do babies come from?

Ask your mother.

How much wood could a woodchuck chuck if a woodchuck could chuck wood?

There are several variables missing from this questions, such as how long is the woodchuck chucking: An hour, a day.  How big are the pieces of wood.  This may make a big difference.  And why are we assume it couldn’t chuck wood.  Chucking just means throwing and am pretty sure a wood chuck could throw small pieces of wood, especially if it wasn’t throwing it that far.

What is the proper way to hang toilet paper?

It is toilet paper. Who cares?