Terry Pratchett said this quote

“ Miss Dearheart gave him a very brief look, and shook her head. There was movement under the table, a small fleshy kind of noise and the drunk suddenly bent forward, colour draining from his face. Probably only he and Moist heard Miss Dearheart purr: ‘What is sticking in your foot is a Mitzy “Pretty Lucretia” four-inch heel, the most dangerous footwear in the world. Considered as pounds per square inch, it’s like being trodden on by a very pointy elephant. Now, I know what you’re thinking: you’re thinking, “Could she press it all the way through to the floor?” And, you know, I’m not sure about that myself. The sole of your boot might give me a bit of trouble, but nothing else will. But that’s not the worrying part. The worrying part is that I was forced practically at knifepoint to take ballet lessons as a child, which means I can kick like a mule; you are sitting in front of me; and I have another shoe . Good, I can see you have worked that out. I’m going to withdraw the heel now.’There was a small ‘pop’ from under the table. With great care the man stood up, turned and, without a backward glance, lurched unsteadily away.‘Can I bother you?’ said Moist. Miss Dearheart nodded, and he sat down, with his legs crossed. ‘He was only a drunk,’ he ventured.‘Yes, men say that sort of thing,’ said Miss Dearheart. ”