There is logic behind the madness. It goes like this:
Click one: "Are you sure you want to buy that animal?"
Click two: "Are you really sure you want that animal?"
Click three: "Are you really really sure? That animal is old, you know?"
Click four: "Are you really sure you want that animal, and spend the overpriced sum?"
Click five: "Oh, I am sorry, someone else bought it faster. You were to slow. Be faster next time."