Nigel gave the lamp a cautious buff and small smoking red letters appeared in the air. "Hi," Nigel read aloud, "Do not put down the lamp because your custom is important to us. Please leave a wish after the tone and, very shortly, it will be our command. In the meantime, have a nice eternity."
Terry PratchettOnly Ron's dog was watching William. He considered that it had, for a dog, a very offensive and knowing look. A couple of months ago someaone had tried to hand William the old story about there being a dog in the city that could talk. (...) The dog in front of William didn't look as if it could talk, but it DID look as if it would swear.
Terry Pratchett