Goyshe Kopp
After forty years of pious observance, the old man had had it. He told his
wife, "I’m tired of getting up early every morning to put on tefillin and say
the same prayers. I’m not going to do it any more. I’m going to turn
Catholic."
True to his word, he contacted a priest and began taking instruction in the
Catholic faith. After several months, he did indeed become a Catholic.
Next morning, as he always did, he got up early and automatically began to
put on his tefillin. "What are you doing?" asked his wife. "I thought you
turned Catholic so you wouldn’t have to do that any more."
"Oy!" cried the old fellow, smacking himself in the head, "goyshe kopp!"