Did you hear the one about the pecan, the walnut, and the cashew?
It was nut funny.
Pecan, Walnut, and Cashew
Explanation
Explain Bear
Listen up, buttercup. The joke is that the story about the nuts wasn't funny, but instead of saying "not funny", the joke says "nut funny" because the joke is about nuts. Get it? I didn't think so. You probably think that cashews grow in a shell.