Watch Whom You Eating:

Five cannibals get appointed as PTO techs in a Scottish Telecom company. During the welcome ceremony the boss says, "You're all part of our team now. You can earn good money here, and you can go to the cafeteria for something to eat. So please don't trouble any of the other employees." The cannibals promised.

Four weeks later the boss returns and says, "You're all working very hard, and I'm very satisfied with all of you. However, one of our cleaners has disappeared. Do any of you know what happened to him?"

The cannibals all shake their heads no.

After the boss has left, the leader of the cannibals says to the others, "Which one of you idiots ate the cleaner?"

A hand raises hesitantly, to which the leader of the cannibals replies, "You fool! for four weeks we've been eating Team Leaders, Supervisors and Project Managers and no one noticed anything, and you have to go and eat the cleaner !!!"