A petrol station owner is trying to increase his sales, so he puts up a sign which reads; Free sex when u fill up.
Moments later johnny pulls in, fills his tank and asks for his free sex. But the owner says if johnny was to claim it, he first has to pick the correct number between one and 10. He guesses 8. Sorry said the owner it was 7, no sex this time.
A week later johnny pulls, fills up and again asks for his free sex. This time he guesses two. Oh so close the owner says, sorry.
This game is rigged, johnny huffs you don't give away free sex at all; thats not true the owner replies, ask your wife she won twice last week.