Trillian

Arthur Dent: — We can talk about normality till the cows come home.
Ford Prefect: — What is normal?
Trillian: — What's home?
Zaphod Beeblebrox: — What are cows?
Arthur Dent: — A proper cup of tea would restore my normality.

— Marvin, you saved our lives.
— I know. Wretched, isn't it?