The golfers sister.
 

An Englishman, a Scot, and an Irishman have just finished a round of golf at a posh resort and head for the bar. The Englishman says, “This is a beautiful bar but the drinks are quite expensive. At my favorite bar in London called the Red Lion the drinks are half the price and your fourth drink is free.” The Scot replies, “At my favorite bar in Scotland called the Tilted Kilt the drinks are a third of the the price and your third drink is free.” The Irishman pipes up and says, “At my favorite bar in Dublin called The Shamrock the drinks are free from the moment you walk into the bar and then they take you upstairs to get you laid.” The Englishman says, “Come on now has that really happened to you?” The Irishman replies, “Well not me personally but it has happened to me sister on several occasions.”

Good one