Dumb people in the beach

A mother and father take their 6-year old son to a nude beach...
As boy walks along the sand, he notices many 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 boy, pleased with the answer, goes to play in the ocean but returns
to tell his mother that 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, the boy goes back to the ocean to play.

After some time, she calls out to their son, 'Where's your father? It's time to leave.'

Boy says, 'Dunno. But daddy was talking to the silliest lady on the beach, and the
longer he talked, the dumber he got. '