Most of those vampire families were highly nobby. You never knew who was connected to who . . . not just connected to who, in fact, but to whom. Whoms were likely to be far more troublesome than your common everyday who.
— Monstrous Regiment (Discworld) by Terry Pratchett (Page 35)
Aah, I was just about to get all grammar sticklery, and then I burst out laughing instead. So far, Pratchett get's a 👍