P.A. system
 

A 747 was starting its descent and the pilot had forgotten to turn off the P.A. system.
"As soon as I clock off" he said, "I'm going to have a nice cold beer and then screw the arse off that blonde flight attendant." The horrified flight attendant made a dash toward the cockpit, but tripped over in the aisle.
A little old lady sitting there whispered, "There's no need to hurry love, he said he was going to have a beer first."