Lil' Johnny attended a horse auction with his father

Lil' Johnny attended a horse auction with his father. He watched as his father moved from horse to horse, running his hands up and down the horses' legs, rump, and chest. After a few minutes, Johnny asked, "Pop, why are you doing that?" "Because I'm thinking of buying these horses." Johnny looked worried, "Then I think we'd better hurry home right away!" "Why?" his father asked. "Because the UPS man stopped by yesterday, and I think he wants to buy Mom!"