...

Young Psychiatrist: Have you ever heard of the old saying "a rolling stone gathers no moss?"
McMurphy: Yeah.
Young Psychiatrist: Does that mean something to you?
McMurphy: Uh... tt's the same as "don't wash your dirty underwear in public."
Young Psychiatrist: I'm not sure I understand what you mean.
McMurphy: [smiling] I'm smarter than him, ain't I? [laughs]
McMurphy: Well, that sort of has always meant, is, uh, it's hard for something to grow on something that's moving.