After the Shabbos service was over, Golda Grunberg meets Rabbi Cohen at the shul door with her young son Shmuel.
"Rabbi," says Golda, "I'm sorry my little Shmuel was so noisy during your sermon."
"That's OK, Golda," says Rabbi Cohen. "These things are not unknown to us rabbis. But do tell me how you managed to get him to keep quiet at the end."
"It was quite easy rabbi," replies Golda. "Fifteen minutes into your sermon, I leaned over to Shmuel and whispered in his ear, 'Shmuel, listen to me carefully. If you don't stop making so much noise, Rabbi Cohen is going to lose his place in his sermon, and if he loses his place, he will have to start his sermon all over again!' And rabbi, he instantly stopped making a noise."