An old woman had a parrot that was prone to swearing.
One day, the old woman said to the parrot, "The vicar is coming this afternoon... please please don't swear".
"Ok", said the parrot.
The vicar arrived and immediately noticed that the parrot had a ribbon tied to each leg.
"What are the ribbons for?", he asked.
The old woman replied, "Well... when I pull the left ribbon, he sings Abide With Me... when I pull the right ribbon, he recites the Lord's Prayer".
"Amazing", said the vicar. "And what does he do when you pull both ribbons together? ".
"I fall off my ******* perch, you *****!", replied the parrot.