A golfer is in Ireland on vacation. He thinks he’s pretty good. He goes to a golf course and asks if there is a member who might play a couple rounds with him. The pro recommended member O’Reilly. He speaks to O’Reilly who agrees to meet him at 9:00 the next day. O’Reilly suggests he might be 30 minutes late. Following morning, O’Reilly shows up on time with a set of left handed clubs, and soundly trounces the tourist. The tourist asks him if they could play again, the following day. Next day, O’Reilly shows upon time carrying a set of right handed clubs. He soundly trounces the tourist. Bear for punishment, the tourist asks if O’Reilly is good for a third game the next day. O’Reilly agrees, saying he might be 30 minutes late. Next day, the tourist is on time, but O’Reilly is late 30 minutes! The tourist asks O’Reilly how it is that he plays with left handed clubs on day one, but is on time. He asks how it is that O’Reilly was on time the second day with right handed clubs. Says O’Reilly, when he wakes up and his wife is sleeping on her left side, he plays left handed clubs. When she sleeps on her right side, he uses the right handed clubs. The tourist asks O’Reilly why he was late 30 minutes on the third day. Simple, said O‘Reilly. This morning when I woke up, she was sleeping on her back!