Quote from Niles in Rooms with a View (Part 2)
Roz: How's he handling all this? Niles: He's positively chirpy. In other words, he's terrified. Frasier: Yes, when we were kids, whenever one of us was sick or hurt, Dad would try to keep us from worrying by pretending the problem didn't even exist. Niles: Nonchalance was his coping mechanism.