A young courting couple are out for a romantic walk along a country lane. As they walk hand-in-hand, his lustful desire rises to a peak.

He is just about to get frisky when she says, "I hope you don't mind, but I really do need to take a piss."

Slightly taken aback by this vulgarity, he suggests that she go behind a hedge. She nods in agreement and disappears behind the hedge. As he waits, he can hear the sound of tight nylon knickers rolling down voluptuous legs and imagines what is being exposed. Unable to contain his animal thoughts a moment longer, he reaches through a gap in the foliage and touches her leg. He quickly moves his hand up her thigh until suddenly, and with great astonishment, he finds himself gripping a long, thick appendage hanging between her legs.

He shouts in horror, "My God, Mary, have you changed your sex!"

"No," she replies, "I've changed my mind. I'm taking a shit instead."