Off-switch

I know nothing about either of those fandoms except for the time I read half of a Discworld book and then my attention span expired (this happens a lot, I tend to borrow more library books than I can ever hope to finish), but a cursory AO3 search turns up this massive multifandom multichapter drabble thing, if you feel like pawing through it to see if it has what you want. Sadly tag filtering on the AO3 has been under maintenance, but you can still plug both tags into the search bar and that works fairly well--I did "Sam Tyler, Sam Vimes".