How we cite our quotes: All quotations are from One Flew Over the Cuckoo's Nest.
Quote #4
Mr. Washington: By the time you get out of here, you'll be too old to even get it up.
Mr. Washington is glad to tell McMurphy that he'll be an old man by the time he gets out of the mental hospital—in the crassest way possible, of course. You see, McMurphy has been under the wrong impression that he is going to get out of the hospital as soon as his prison sentence is up. But he doesn't realize that the mental hospital can keep him there for as long as it sees fit.
Quote #5
McMurphy: You're just a young kid. What are you doing here?
McMurphy is offended when he finds out that the young Billy Bibbit has chosen to be inside the mental hospital voluntarily. He thinks that Billy should be out doing all the things that free young men should be doing, like getting drunk and dating women.
Quote #6
McMurphy: Jesus, I mean, you guys do nothing but complain about how you can't stand it in this place, and then you haven't got the guts to walk out?"
You'll have to pardon the somewhat self-righteous McMurphy for being super annoyed that the men around him complain all the time about the mental hospital when they have the opportunity to leave whenever they want. For him, there is nothing more important than freedom. That's why it blows his mind when he finds out that some people reject freedom for the comfort of having someone else make decisions for them.