As retold by Bruce Lowitt

The rabbi in Chelm  is seated in his study when Herschel and Morty stop by. They have been arguing and haven't been able to resolve their dispute. The rabbi, they decide, will know who's right.

Morty explains his side of the story, doing it sincerely and with gravity in his voice.

The rabbi thinks for a moment, then says, "Y'know, Morty, you're right."

"Wait a minute," Herschel says. "You haven't heard my side of the story."

He proceeds to tell his version with such passion that the rabbi says, "Herschel, you're right."

Exasperated, the two men leave and continue their argument elsewhere.

That evening, the rabbi tells his wife about Morty and Herschel's problem - without details - and what he told them.

His wife says, "They have conflicting stories.  How can you say that both of them are right?  When one wins, the other must lose."

The Rabbi thinks long and hard and finally says to his wife, "Y'know, you're right."