“Nevertheless, it bothered Vimes, even though he'd got really good at the noises and would go up against any man in his rendition of the HRUUUGH! But is this a book for a city kid? When would he ever hear these noises? In the city, the only sound those animals would make was "sizzle." But the nursery was full of the conspiracy with bah-lambs and teddy bears and fluffy ducklings everywhere he looked.

One evening, after a trying day, he'd tried the Vimes street version:

Where's my daddy?
Is that my daddy?
He goes "Bugrit! Millennium hand and shrimp!"
He is Foul Ol' Ron!
No, that's not my daddy!

It had been going really well when Vimes heard a meaningful little cough from the doorway, wherein stood Sybil. Next day, Young Sam, with a child's unerring instinct for this sort of thing, said "Buglit!" to Purity. And that, although Sybil never raised the subject even when they were alone, was that. From then on Sam stuck rigidly to the authorized version.”