Big Bang Theory Quote
Sheldon: I don't know what color lonely is.
Raj: What?
Sheldon: Red is angry, yellow is frightened, green is jealous, and blue is depressed. Perhaps we can assign a color to lonely.
Raj: Nothing rhymes with orange. It's probably lonely.
Sheldon: All right. Come in. You positively orange with loneliness.
(Raj enters the apartment)
Sheldon: No, I don't see that catching on at all.
Quote from S04E22 - The Wildebeest Implementation