Here is a joke chosen by Sara, a web site production manager and mother of 3. It was taken from Jokes.com.
Being Brave at the Supermarket
As they passed the cookie section, the little girl asked for cookies and her mother told her no. The little girl immediately began to whine and fuss, and the mother said quietly, "Now Monica, we just have half of the aisles left to go through -- don't be upset. It won't be long."
Soon, they came to the candy aisle and the little girl began to shout for candy. When told she couldn't have any, she began to cry. The mother said softly, "There, there, Monica, don't cry -- only two more aisles to go and then we'll be checking out."
When they got to the checkout stand, the little girl immediately began to clamor for gum and burst into a terrible tantrum upon discovering there'd be no gum purchased. The mother patiently said, "Monica, we'll be through this checkout stand in five minutes and then you can go home and have a nice nap."
The man followed them out to the parking lot and stopped the woman to compliment her. "I couldn't help noticing how patient you were with little Monica," he began.
The mother sighed and replied, "Oh, no. I'm Monica -- my little girl's name is Tammy."