it's my life

Little Johnny attends a horse auction with his father. He watches as his father move
from horse to horse, running his hands up and down the horse's legs, rump, and chest.
After a few minutes, Johnny asks, “Dad, why are you doing that?”
His father replies, “When I'm buying horses. I have to make sure that they are healthy
and in good shape before I buy.”
Johnny looked worried, “Then I think we'd better hurry home right away.”
“Why?” says his father.
“Because I think the mail man was trying to buy Mum yesterday.”