Story from the early 1980's from a Singaporean F/O flying with an expat captain. They are somewhere over the Pacific and have invited a very attractive young lady into the cockpit to look around.
Her: ' Whats that little island down there?'
Long silence. Then the captain pulls a diary out of his pocket, turns to the map of the world and says to the F/O:
'Here you are, your eyes are better than mine, you figure out where we are.'
I hope this is not apocryphal, it was told to me as first hand.