A man is driving down the M6 when he sees a sign that says, "Get petrol and free sex here". So obviously the guy was interested, so he stopped, filled up went inside to pay.
"Pick a number from 1 - 10 to get free sex." said the cashier.
"Uh, okay, 3!" the man replied.
"Nope! Sorry you can play again next time you buy petrol". So the guy drove around for weeks always getting petrol at the same place, because he wanted his free sex. One day he was really annoyed:
"This has got to be rigged! I have never gotten the number to have free sex!" He screamed.
"Oh no! It's not rigged, just ask your wife, she won 3 times last week alone!"
