Five cannibals are hired as programmers at an IT company. When welcoming the cannibals, the project manager says: "You can work here now, earn good money, and eat in our canteen. So leave the other employees alone."

The cannibals vow not to bother their colleagues. After four weeks, the project manager returns and says, "You're doing a great job. We just need a cleaning lady. Do you know what happened to her?" The cannibals all say no and swear they had nothing to do with it. When the project manager leaves, the boss of the cannibals asks, "Which one of you idiots ate the cleaning lady?"

The last one speaks up very quietly: "It was me."

The boss scolds him: "You idiot, we've been eating team leaders, department heads, and project managers for four weeks so that no one would notice, and you moron had to eat the cleaning lady!"