More funny from Terry Pratchett

I'm reading the Fifth Elephant right now, and the repartee between the officers of the Watch has the ring of authenticity about it. Knowing a few LEOs, I can just hear the following exchange:

"Corporal Nobbs!"
...
"Coming, Captain!" shouted Nobby. He pulled open the bottom drawer of his battered and stained desk and took out a packet of chocolate biscuits, some of which he arranged daintily on a plate.

"Does me no good at all to seeyou acting like this," Stronginthearm went on, winking at the other dwarfs. "You've got it in you to be a really bad copper, Nobby. Breaks my heart to see you throwin' it all away to become a really bad waitress."