Season 4, Episode 12
Dean and Sam step back from the impending apocalypse and investigate a series odd deaths taking place during a week long magic showcase. Is someone there dabbling in something more dangerous than illusions.
Dean: Man, I hope I die before I get old. The thing seems brutal, don't it?
Sam: You think we will?
Dean: What?
Sam: Die before we get old?
Dean: Haven't we both already?
Sam: You know what I mean, Dean. I mean, do you think we'll both still be chasing demons when we're 60?
Dean: No, I think we'll be dead. For good. What? You want to end up like Travis or Gordon maybe?
Sam: There's Bobby.
Dean: Oh, yeah, there's a poster child for growing old gracefully.
Sam: Maybe we'll be different, Dean.
Dean: What kind of Kool Aid are you drinking, man? Sammy, it ends bloody or sad. That's just the life.
Dean: Evil bitches just keep piling out of the Volkswagen.