Gaeliboo
A person who claims to be Irish just to get a discount and doesn't know the difference between a pub and a pizza place.
She got 10% off for being Irish, but she doesn't know what 'whiskey' is.
He says he's Irish because he likes green and thinks the British stole his lunch money.
He told the waiter 'I'm Irish, I don't need a menu.' The waiter gave him a menu.