Artificial Insemination

One morning, on his way out to check on the cows the rancher says to Amy, "The
artificial-insemination man is coming over to impregnate one of our cows today.
I drove a nail into the two-by-four just above the cow's stall in the barn. You
show him where the cow is when he gets here, okay?" So the rancher leaves for
the fields.

After a while, the artificial-insemination man arrives and
knocks on the front door. Amy takes him down the barn. They walk along a long
row of Cows and when she sees the nail, she tells him, "This is the
one.....right here."

Terribly impressed by what he seemed to think just
might be another ditzy blonde, the man asks, "Tell me little lady, how did you
know this is the Cow to be bred?"

"That's simple. By the nail over its
stall," Amy explains very confidently.

Then the man asks, "What's the
nail for?"

She turns to walk away, and with complete confidence, says,
"I guess it's to hang your pants on