A tourist walked into a pet shop and was looking at the animals on display. While he was there, another customer walked in and said to the shopkeeper, "I'll have a C penguin please." The shopkeeper nodded, went over to a cage at the side of the shop and took out a penguin. He fitted a collar and leash, handed it to the customer, saying, "That'll be £5,000." The customer paid and walked out with his penguin.

Startled, the tourist went over to the shopkeeper and said, "That was a very expensive penguin. Most of them are only a few hundred pounds. Why did it cost so much?" The shopkeeper answered, "Ah, that penguin can program in C - very fast, tight code, no bugs, well worth the money."

The tourist looked at a penguin in another cage. "Hey, that one's even more expensive! £10,000! What does it do?" "Oh, that one's a C++ penguin; it can manage object-oriented programming, Visual C++, even some Java. All the really useful stuff," said the shopkeeper.

The tourist looked around for a little longer and saw a third penguin in a cage of its own. The price tag around its neck read £50,000. The tourist gasped to the shopkeeper, "That one costs more than all the others put together! What on earth does it do?"

The shopkeeper replied, "Well, I haven't actually seen it do anything, but it says it's a project manager".