1. med - Same as hangover
2. feeling of depression: a bewildered or discouraged state
3. din: a loud and confused noise
[Mid-19th century. < German < Katze "cat" + Jammer "distress"]
Bob woke with a serious katzenjammer this morning. He didn't think anyone could really blame him for 'wallowing in his own crapulence' the night before. After all, it is not everyday that Bob doesn't blow up the town via ineptitude while monitoring the nuclear power plant's safety limits. Oh wait, Bob is confusing himself with cartoon characters again - what was it he drank!