Two Irishmen were having an argument in a pub. They were arguing about which one of them had the better dentist. O'Neil said, "Oi, mines the best!" Paddy Flynn said, "No, mine is!" They went on like this for hours until Flynn finally got up, left the pub, and went to an IRA office and turned his friend in for being a British informer.
What's great about this joke is the blank look on people's faces after you tell it. It never fails to crack me up.
Now, feck off, eat a potato, and drink a Guinness, it's St. Patrick's Day after all.
