Three cannibals get hired at a manufacturing company.
They are welcomed to the company and told to go to the cafeteria as long as they don't bother the other workers.
The cannibals promise.
A month later the boss comes to see them and tells them all they have been doing a great job, but the janitor is missing. He asks if anyone knows anything about this.
The cannibals shake their heads no.
After the boss leaves the lead cannibal screams at them. «Who is the idiot that ate the janitor?»
One hand slowly rises.
«You idiot!», says the lead cannibal, «we have been eating the project managers so no one would notice and then you go and eat the janitor!»