A young kid's in a shipwreck and he winds up stran

A young kid's in a shipwreck and he winds up stranded on a tropical
island. For twenty years he never sees another human being. Then
one day a beautiful girl with long blond hair, her clothes half-ripped
off, washes up on a piece of driftwood. He explains to her how he
existed for twenty years, digging for clams, and eating fruits and
berries.She says, "Well, what did you do for love?"
He says, "Love? What's that?"
She says, "I'll show you."
She shows him. Then she shows him again. Then she shows him one
more time. When they're finally done, she says, "Well, how do you
like love?"
He says, "It's great. But look what you did to my clam digger."