There was a priest who had a parrot, when you pulled the parrot's right leg it would say "Kyrie Eleyson", when you pulled its' left leg it would say, "Amen".  One day a friend of the priest was visiting his house and having heard of the parrot decided to pull its' legs. Pulling  its' right leg the parrot said, "Kyrie Eleyson", pulling its' left the bird said,  "Amen."

The visitor then asked the priest, "What happens if I pull both legs?"  To which the priest not knowing said, "Try it".  Pulling both legs the parrot exclaimed, "What are you doing you ass-hole your going to rip my balls off!"