Perhaps the most bizarre of all is Cotard delusion, in which the sufferer believes he is dead and cannot be convinced otherwise.

Though they breed in the High Arctic summer, Arctic terns 'winter' south in the austral summer, thus living a life of perpetual summer and almost endless daylight in the classic example of 'globe-spanning'. […] Longhauling 22,000 miles a year they are the only northern breeding species which migrates regularly to Antarctic waters.

putting gulleries on some or other till they have made by their humouring or gulling ex stulto insanum, a mope or a noddy

She became a celebrated actress, but never won any major awards.