What are you willing to write in your notebook? These nuts.
These Nuts
Categories
Explanation
Experiment
Explain Bear
Okay, so the joke is all about them nuts. The dude is asking what you gonna write in your notebook, but then hits you with a "these nuts" joke, like you're gonna write that down. It's dumb, I know, but that's the joke. You're probably the type to write down everything you're told, aren't you?