A Jewish man converts to Catholicism, but he still likes his chicken on Friday nights. His priest comes over for dinner, and is surprised that the man is eating chicken instead of fish. The priest asks him about this, and the man asks,”Do you have any holy water with you?”
“Why do you ask, my son?” says the priest.
“Well, you sprinkled it on my head, and that made me a Catholic. So sprinkle some on my chicken and it’ll be a fish.”