katz·en·jam·mer 
(kătsən-jăm′ər)
(kătsən-jăm′ər)n.
1. A loud, discordant noise.
2. A hangover.
3. A state of depression or bewilderment.
[German, hangover : Katzen, pl. of Katze, cat (from Middle High German katze, from Old High German kazza; akin to Old English catt; see CAT) + Jammer, wailing (from Middle High German jāmer, from Old High German jāmar, misery).]