Three newly recruited trainee police officers are having a cup of coffee in their sports club canteen. They engage in a conversation about superstition. The seemingly older of the chaps says, "When my wife was pregnant, she read a book called 'Double Trouble' and she ended up having twins." The second lad responds, "That's interesting -- guess what? My wife read 'The Three Musketeers' when she was pregnant, and had triplets." The third gets up, already sweating profusely, and spurts, "Guys, I've gotta get home right now. I left my wife reading 'Ali-Baba and the Forty Thieves!'"