I'm not sure specifically what 'Cap deage' means. It could be a very specific term, a misspelling, or something relatively unknown. It might be a proper name, a local term in a certain area or a very niche concept.
I don't have enough information to say exactly who Cap'n Kathy is. She could be an original character created by the fan fiction writer. Maybe she's a pirate - the 'cap'n' part could suggest that - who has some connection to the wizarding world of Harry Potter.
Nerd fiction is a genre that often caters to the interests of self - described 'nerds'. It typically includes elements like science - fiction, fantasy, complex technology, and often features characters who are highly intelligent or into niche hobbies.
Well, 'nerd fanfiction' is basically fanfiction written by self - proclaimed nerds. They might be really into a certain geeky franchise, say Star Trek or Lord of the Rings. And they write stories that are set in those worlds. It could be something as simple as a love story between two minor characters that the official story didn't explore, or it could be a big, epic adventure that changes the whole course of the fictional universe.
The cap man and monkey story is an interesting one. There was this cap man who was traveling around selling his caps. He reached a place near a forest and decided to take a rest under a tree. While he was sleeping, the monkeys in the tree noticed the caps. They climbed down, grabbed the caps, and went back up the tree. When the man woke up, he was confused at first, then saw the monkeys with his caps. He was worried as those caps were his livelihood. But then he remembered that monkeys often mimic human actions. So he took off his own cap and tossed it. The monkeys, being the imitators they are, did the same with the caps they had taken, and the cap man got his caps back.
One of the best nerd novels is 'Ready Player One' by Ernest Cline. It's set in a dystopian future where people escape into a virtual reality world called the OASIS. It's filled with 80s pop - culture references that nerds would love. Another great one is 'The Hitchhiker's Guide to the Galaxy' by Douglas Adams. It's a comical and absurd science - fiction adventure across the galaxy. And 'Ender's Game' by Orson Scott Card is also highly regarded. It tells the story of a young boy, Ender, who is trained to fight in a future interstellar war.