Quote from Niles in An Affair to Forget
Niles: There you are. [Gunnar looks up] Yes, I'm talking to you, strudel boy! No one seduces my wife and gets away with it. You probably thought because of my refined bearing and swimmer's build that I wouldn't put up a fight for the woman I love. But you're dead wrong, because real men have a thing called "honor!" [Gunnar stands up and is significantly taller than Niles.] Yow! You wouldn't know about that, would you? Frasier: Niles. Niles: You wouldn't know how decent people behave. Frasier: Niles. Niles: You wouldn't know the meaning of the word "rectitude!" Frasier: Niles, he wouldn't know the meaning of the word "dog," "cat," or "pencil!" He doesn't speak English, remember?!