Why does man print “gimme gimme gimme” at 00:30?

The maintainer of man is a good friend of mine, and one day six years ago I jokingly said to him that if you invoke man after midnight it should print “gimme gimme gimme”, because of the Abba song called “Gimme gimme gimme a man after midnight”. Well, he did actually put it in. A few people were amused to discover it, and we mostly forgot about it until today.

Long live the good old hacker spirit. Full story here.