The need or want to eat certain foods because of the pleasure you receive from crapping it out. For example, spicy food because it burns
your asshole or garlicky beans because you can kill trees with your gas and
peel the paint off
the walls when you blow up your bathroom.
Example 1: I have a real crappetite for that
ghost pepper sauce, there's no better butthole burn!
Example 2: I have a real crappetite for baby food because how it eats isn't as
important as how it craps.