My JW mother told me this joke today. I think it's very funny and so did she.
A woman had always wanted a parrot, but when she went to buy one, she learned they were about $5000. The clerk at the pet store told her he had one parrot that was $500 but there was a drawback. He had been owned by Jehovah's witnesses and wouldn't stop preaching. She decided to take him anyway, thinking she could re-train him.
He preached and preached and preached, until she couldn't stand it anymore. She put him in a box and shook it violently. He squawked "ARMAGEDDON, ARMAGEDDON".
She took him out and put him on his perch. He kept on preaching without letup.
Exasperated she grabbed him and threw him against the wall. He lay on the floor squawking "NO BLOOD, NO BLOOD".