A mother and father take their 6-year old son to a nudist beach.

As the little boy walks along the sand, he notices that many of the women have boobs bigger than his mother's, so he goes back to ask her why.

She tells her son, "The bigger they are, the sillier the lady is."

The little boy, pleased with the answer, goes to play at the ocean shore but returns to tell his mother that he notices many of the men have larger things than his dad does.

She replies, "The bigger they are, the dumber the man is."

Again satisfied with her answer, her son returns to the ocean shore to play.

Shortly thereafter, the little boy returns and promptly tells his mother, "Daddy is talking to the silliest lady on the beach, and the longer he talks, the dumber he gets."
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