A petrol station owner in Dublin was trying to increase his sales, so he
put up a sign that read, 'Free Sex with Fill-Up.'

Paddy 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. Paddy guessed 8, and the proprietor
said, 'You were close. The number was 7. Sorry. No sex this time.'

A week later, Paddy, along with his friend Mick, 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.
Paddy guessed 2. The proprietor said, 'Sorry, it was 3. You were close,
but no free sex this time.'

As they were driving away, Mick said to Paddy, 'I think that game is
rigged and he doesn't really give away free sex at all.' Paddy replied, 'No
it's genuine enough Mick. My wife won twice last week.'