Supernatural, Season 4

Dean:
Oh, come on. Aren't you a little bit tempted?

Sam:
No. Wouldn't be real. I wouldn't trust it.

Dean:
I don't know. That bear seemed pretty real.

Sam:
Yeah.

Dean:
Come on, if you could wish yourself back, you know, before it all started... Think about it. You'd be some big yuppie lawyer with a nice car and a white picket fence.

Sam:
Not what I'd wish for.

Dean:
Seriously?

Sam:
It's too late to go back to our old lives, Dean. I'm not that guy anymore.

Dean:
All right, well, what, then? Hmm? What would Sammy wish for?

Sam:
Lilith's head on a plate. Bloody.