Little Johnny asked his Grandma how old she was.
Grandma answered, "39 and holding."
Johnny thought about that and then asked, "And how old would you be if you let go?"
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Dentist: Little Johnny, you're not brushing your teeth very well. Do you know what comes after decay?
Little Johnny: De 'L'?
Little Johnny's teacher asks, "George Washington not only chopped down his father's Cherry tree, but also admitted doing it. Do you know why his father didn't punish him?"
Little Johnny replies, "Because George was the one holding the axe?"
Little Johnny asked his dad, "What do you do when you put one foot on the boat and the other on the dock?"
"Swim," replied his dad. "You fall in, and then you swim."