“Howard: You know, I'm really glad you decided to learn Mandarin. Sheldon: Why? Howard:…”

“Sheldon: Anyway, the housekeeper in the faculty residence didn’t speak any English. When I…”

“Howard: Oh, stop it with the fake third-world crap. Your father is a gynecologist, and you…”

“Leonard: You are not Isaac Newton. Sheldon: No, no, that’s true. Gravity would have been…”