Frasier: Good morning, Dr. Crane.
Niles: And to you, Dr. Crane
Frasier: Oh, Niles, why should we be so formal, there's nobody around.
[Frasier raises his hand to give a high five. Niles cowers in fear.]
Frasier: It's a high five, Niles!
Niles: Oh, oh, oh, sorry.