Three rabbis are standing around schmoosing when one of them says, Weve got a terrible problem with mice in the basement of the shul. Traps, cheese. Nothing works.

The second rabbi says, Same thing with us. We tried it all. Still we have mice.

The third rabbi says, We had the very same problem—but not anymore! Now the other two rabbis are interested. How did you do it?

It was easy. I went down in the basement, gathered all the mice together and performed a mass bar mitzvah. And we havent seen any of them since!