cuckoo days. why did the bird become cuckoo, when cuckoo means a silly, befuddled person, going cuckoo, gone cuckoo. is it cuckoo to lay your eggs in another's nest? people do it all the time, and they say they are not crazy, but enterprising, go-getters. is it cuckoo for a bird to fly thousands of miles into a stone bell tower of the oligarchy? when it hits it may ring a bell, ever so faintly.