From Gustave Flaubert’s “Dictionary of Received Ideas“, “(in French, Le Dictionnaire des idées reçues) is a short satirical work collected and published in 1911-3 from notes compiled by Gustave Flaubert during the 1870s, lampooning the clichés endemic to French society” (text retrieved from this link):
SUMMER Always ‘unusual’. (See WINTER.)
WINTER Always ‘unusual’. (See SUMMER.)
(thanks to FM for pointing this out)