A gas station owner in Alabama 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 sex this time.
A week later, the same redneck, along with his brother, Bubba, pulled in for another fill-up. Again he asked for his free sex.
The proprietor again gave him the same story, and 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 brother, 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, our sister Billy-Joe won twice last week.