If The Plane Has No Engines ....

Two Kerrymen were flying home from London in a four engine jet. Suddenly the following announcement came over the intercom:
'Ladies and Gentlemen, one of the engines has failed and we will be an hour late in arriving.
A few minutes later it was announced that another engine had failed and that there would be a delay of three hours.
Finally it was announced that a third engine had failed and that there would be a delay of six hours in arriving.
One Kerryman turned to the other and said, 'If that fourth engine goes, we will be up here all night".