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

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."