The famed explorer Robert Peary once found himself discussing his polar expeditions with a young woman. "But how does anyone know when he has reached the North Pole?" she asked. "Nothing easier," Peary replied. "One step beyond the pole, you see, and the north wind becomes a south one."
[Peary once included a nude photo of his mistress (Eskimo Aleqasina shown bathing) in a book about his travels.]