Shop Window

New York, beginning of the twentieth century. Some Jewish immigrant from the Eastern Europe that does not know a single word in English looks for a shop where he can repair his pocket watch.
Since he cannot read the signboards, he looks at the shop windows, and at last he finds the one where the large cardboard model of clock appears.
He enters and sees that the salesperson is a Jew, so they can talk Yiddish.
He produces a watch and asks: "How much is to fix this?"
?- We do not fix watches, we circumcise male infants.
?- Then why did you put a clock in your shop window?!
?- And what, to your mind, should we put there?