English▸ noun US informal, dated confusion; uproar.
▪ a hangover; a severe headache resulting from a hangover.
– ORIGIN mid 19th century : from German Katzen (combining form of Katze ‘cat’) + Jammer ‘distress’; popularized by the cartoon Katzenjammer Kids, drawn by Rudolf Dirks in 1897 for the New York Journal, featuring two incorrigible children.