?Can you hold my cock and pull it while I scratch my ass??

A city slicker decided that he was going to become a farmer one day, so he started walking down a road toward the country side. As the city slicker is walking down the road he sees a sign. The sign reads Cock for Sale. The city slicker is a bit puzzled but goes up to the farmer and asks, ?What is a cock?? The farmer replies that it is a male chicken. So the city slicker buys the cock.
As the city slicker walks down the road he sees another sign which says pullet for sale. The city slicker is again puzzled and walks up to the farmer and says ?What is a pullet?? The farmer replies that it is a female chicken. So the city slicker buys the pullet.
As the city slicker goes farther down the road he sees a sign that reads Ass for Sale. The city slicker asks the farmer what an ass is and he replies buy telling the city slicker an ass is a donkey. So the city slicker buys the ass. The farmer then tells the city slicker that the only way to make the donkey move after it lies down is to scratch its belly. The city slicker feels he can remember that, so he continues down the road. The donkey then lies down on the side of the road. The city slicker then finds himself in a predicament. Because he can't hold his cock and pullet while trying to get his donkey up. So he the ask a blonde walking,
?Can you hold my cock and pull it while I scratch my ass??