On the flight deck of a 737 descending into Malaga; captain was making a pa announcement; ATC instruct us to descend to what I heard as FL110; F/O reads back 'descend to FL100'. I query this; F/O asks captain who has finished his cabin pa; captain asks ATC; ATC reply 'flight level one six zero'.
Captain turns to me and says 'that sort of thing happens all the time round here'!