Don't have a horse? Thinking it might be fun? Have some neighbors with horses and what appears to be a decent marriage? Pull up a lawn chair, grab a beer and some popcorn and let me fill you in on why your horsey neighbors always have that grizzled look cowboys are famous for. Here's how it starts. "Honey, let's go to the rodeo." This is when you run for the fridge to grab a beer, set up a lawn chair and start your video rolling. It's show time. Step One. Somebody has to back the truck to the trailer. Usually it's the husband. But as you will learn, this doesn't always mean that the husband was the best choice. He starts the truck and leaves the driver's door open, his left leg is casually draped over the edge because this is going to go so quickly, there's no point putting both feet inside the vehicle. He peers up through the rear-view mirror. Meanwhile, his wife is straddling the hitch, eyeballing him with doubt. Her immediate la