Abie, a gentleman who lives southeast, sent this one...

Amy, a Texas girl from the city, marries a Texas rancher.

One morning, on his way out to check on the cows, the rancher tells his new wife, "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?"

The rancher leaves for the fields. After a while the artificial insemination man arrives and knocks on the front door. Amy takes him down to 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 assumed was just another ditzy blond, the man asks, "How did you know this is the cow to be bred?"

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

The man then asks, "What's the nail for?"

As she walks away, she turns her head back over her shoulder and tells the man... "I guess it's to hang your pants on..."