A man was walking down a city street, when he noticed a store with many clocks and watches in the window. So he opened the door and walked in. He said to the proprietor, "I need to have the battery in my watch changed. Can you do that?"
The proprietor answer, "Sorry, I am afraid not. I don't know anything about watches."
The man was taken aback, and said, "Why not?"
The proprietor said, "Well, to tell the truth, I am the local mohel."
"But, what about all the clocks and watches in the window?" the man asked.
The mohel answered, "What else do you suggest I put in my window?"
