The Blonde and the Cow

A blond city girl named Diana marries a Colorado rancher. One morning, on his way out to check on the cows, the rancher says to Diana, 'The insemination man is coming over to impregnate one of our cows today, so I drove a nail into the 2 by 4 just above where the cow's stall is in the barn. Please show him where the cow is when he gets here, OK?' The rancher leaves for the fields. After awhile, the artificial insemination man arrives and knocks on the front door. Diana takes him down to the barn. They walk along the row of cows and when Diana sees the nail, she tells him, 'This is the one right here.' The man, assuming he is dealing with an air head blond, asks Diana; how would YOU know that this is the right cow to be bred?' 'That's simple," she said. "By the nail that's over its stall,' she explains very confidently. Laughing rudely at her, the man says, 'And what, pray tell, is the nail for?' Diana turns to walk away and says sweetly over her shoulder, 'I guess it's to hang your pants on.'