Farfanugen
I also like the words Entweder and Schmetterling.
Weltanschauung (it was mentioned in Calvin and Hobbes once)
Die Katze
Schilddrüsenunterfunktion
seilsalat
2nd: zugzwang
qualifizierte Gleitzeit
(going to work whenever you want as long as enough hours are spent at work...)
Freundschaftsbeziehungen (Friendship relations) or Poopenfarten (toilet)
Zugzwang
The nicest word? Habseligkeiten.
The funniest word? Eierschalensollbruchstellenverursacher.