Paddy and Murphy on a plane flying from Belfast to London, 15 Mins into the journey the captain grasps the radio and announces that the flight will be delayed by half an hour as they have lost power in one engine but there is nothing to worry about...again 30 mins later the captain announces that they have lost power in the second engine and it will be another 30 mins until they reach London...again nothing to worry about. Would you believe it after another 15 mins the captains on the mic again, we have lost power in engine number 3, we can still fly on one engine but we will be delayed by another half an hour. Paddy turns to Murphy and says: I hope we dont loose the 4th engine or we'll be up here all day!