A gas station owner in Mississippi was trying to increase his sales, so he put up a sign that read 'Free Sex with Fill-Up'.
Soon a local redneck pulled in, filled his tank and asked for his free sex. The owner told him to pick a number from 1 to 10. If he guessed correctly he would get his free sex. The redneck guessed 8, and the proprietor said, You were close. The number was 7. Sorry, no free sex this time.
A week later, the same redneck, along with a buddy, Bubba, pulled in for another fill-up. Again he asked for his free sex. The proprietor again asked him to guess the correct number. The redneck guessed 2 this time. The proprietor said, Sorry, it was 3. You were close, but no free sex this time. As they were driving away, the redneck said to his buddy, I think that game is rigged and he doesn't really give away free sex.
Bubba replied, "No it ain't, Billy Ray, it ain't rigged. My wife won twice last week.