Duck Transaction Gone Wrong

A guy is bankrupt, so he gives his son a duck and tells him to go sell it for as much as he can. So the kid goes on the street to sell the duck. A prostitute walks by and says, "I'll f--ck you for $10." The boy says, "I would, but I don't have any money." She says, "Ok, I'll take the duck instead." He says, "Ok," so they go upstairs and f--ck. The prostitute says, "That's the best sex I've ever had. I'll give you the duck back, and we can do it again." So they do, and he gets the duck back. But when they go downstairs, the duck gets hit by a car. And the guy that hit the duck feels so bad that he gives the kid $25. So when he gets home, his father asks him why he looks so tired. The boy says, "Well, I got a f--ck for a duck, a duck for a f--ck, and $25 for a f--cked up f--ck."