Can you buy a peanut butter cookie?

You can't buy a peanut butter cookie in the same way you buy a car or a book. Here's why:

* Peanut butter cookies are food: They are made to be eaten, not bought as a physical object.

* You can buy the ingredients to make them: You can buy peanut butter, flour, sugar, and other ingredients to make your own peanut butter cookies.

* You can buy pre-made peanut butter cookies: Many bakeries, grocery stores, and cafes sell pre-made peanut butter cookies.

So, you can't buy a peanut butter cookie in the sense of owning it like a possession, but you can buy the ingredients or the cookies themselves.