Two rednecks were driving down a country road in a pickup truck. The driver tells his buddy that there's a new gas station on down the road that offered a CHANCE at free sex with every fill-up, and that he was going to stop and fill it up.
So, they stop and fill it up. The owner comes out, collects the money and tells the guy he has a chance to win some free sex. All he has to do is guess the correct number between 1 and 10. After thinking a minute, he guesses 6.
The owner says "Man you almost won, the number was 7. Y'all come back!"
They drive off, and after a few minutes of silence, the driver's buddy says "You know, I've been thinking about that free-sex deal, and it's rigged. No way you're gonna win. No matter what number you guess, the guy's gonna say you're wrong."
The driver says "Naw, it ain't rigged. I know you can win."
His buddy asks "And just how do you know that?"
The driver replies "My wife stopped in there twice last week, and she won both times."