- The fact that there are no witches in Ankh-Morpork (at least as far as we can tell) would seem to lend to your theory: witchcraft in Lancre and the surrounding area seems to get passed down from one witch to another, but without any witches to begin with, there wouldn't be anyone to pass it down in Ankh-Morpork. Shame, that.
- As it turns out, there are witches in Ankh-Morpork, though they keep a high profile - they dress up in so gaudy witch costumes that everybody assumes they're just going to a hen party, or something.
- The chants and the Shove are both products of Football, and had been around long before Mr. Nutt showed up in Ankh-Morpork.
- The orcs are stated to have been made from humans, my theory still stands.
- Sir Terry knows about Games Workshop, and even was in talks to write a novel for them (in the early Nineties) but it never went anywhere.
- Nutt isn't a people person. He uses big words and brings up complicated concepts. And he's nice, and requires explanations for things everyone else in the city takes for granted. And he doesn't wear a gold suit. He'd be totally wrong for the city if he were in politics. He needs to find his own niche and do good for the city in his own way like a certain Captain does.
- And it's hinted at at the end of the novel that Ventari plans on making Gilda his personal cook and therefore keeping Nutt close, not to mention giving him something that Margoletta, his rival/love interest (which is really as clear as you can define their relationship) wants as an added bonus, and probably already has plans for him that he's waiting for the right time to activate, so the aforementioned niche is presumably in the works.
Having football hooligans and orcs in the same book?
- Engineered as warriors, nearly impossible to kill, keep showing up after everyone thinks they're wiped off the planet, instinctive push to group action, near-instinctive grasp of mechanical skills he's only read about... There's just no way that's a coincidence.
- There actually exists a tabletop football game set in the Warhammer universe. Granted, it uses American football...
- Speaking of orcs, it's easy to see a parallel between Nutt and another member of a race of formerly enslaved super soldiers who is philosophical, well-spoken, well-read, and has a little something inside of him that helps heal injuries.note
- In a similar vein to the above, though this may well be a coincidence, there's an orc in the Warcraft series who was also deliberately taken away from his kind and given an extensive education, which left him eloquent and polite. Thrall, too, spent his early childhood in horrible living conditions and developed a strong bond with a human girl who showed him kindness. Then he went back to the orcs and led them towards a less destructive path.
- Glenda is in many ways just like Agnes. There's speculation that she's a witch (see above, that wasn't this troper). She has an inner Glenda reminiscent of Perdita X Dream (though to be fair, it's also sorta like second thoughts are described in the Tiffany Aching books). She's also pleasantly plump, so to speak, and slightly self conscious about it (though she gets over that). Now Glenda is in love with Nutt and he's stated to be going to take Mightily Oat's place in Uberwald. Agnes and Mightily had some romantic interest near the end of Carpe Jugulum. So Glenda and Nutt would be taking over for Agnes and Mightily. It would also explain why Agnes has disappeared off the face of the earth during the Tiffany Aching books.
- Oh great, so now we have Nitt and Nutt together? All that's missing is Nutter from Good Omens. I sense a Dumb & Dumber spoof coming up...
- Agnes has a very brief appearance in A Hat Full of Sky at the Witch Trials. There's no evidence that she has a "steading" in Lancre or lives there all year round, though (and Tiffany leaves Lancre after her training is over — it wouldn't be too hard to broomstick in for one day).