This reminded me of a joke about clocks...
Davidās watch was not working. He remembered passing a little shop with clocks and watches in the window, so he took the watch in and asked for it to be repaired.
āIām sorry. I donāt repair watches,ā said the man behind the counter.
āWell, how much for a new one then?ā asked David.
āI donāt sell watches.ā
āClocks, you sell clocks then? How much for a clock?ā
āI donāt sell clocks.ā
David was getting exasperated. āYou donāt sell watches, you donāt sell clocks?ā
āNo, Iām a mohel,ā replied the man.
āThen why do you have all those clocks and watches in the window?ā
āIf you were a mohel, tell me, what would you put in your window?ā