Picture a pastoral scene on a small farm. Ma is out on the swing on the front porch. Pa comes out to watch the sunset with her. They sit in complete silence observing natures beauty. Moments after the sun set. Ma reaches out and clobbers Pa so hard. He tumbles over the rose bushes fronting the porch. He get up return to his seat. Looks at Ma and says what the heck was that for. Ma replies " That is for having such a small penis. " Pa takes this in reflects for a moment or two. Pa all of a sudden lands a haymaker on Ma's chin. She goes a twirling off the porch and ends up on dusty path. Eventually she recovers and staggers to the swing again. Turns to Pa and says what in earth what that for. Pa doesn't even look at her and says " that was for knowing the difference. "