Ruby: There's a real fire in the pit... agonies you can't even imagine.

Dean Winchester: No, I saw Hellraiser. I get the gist.

Ruby: Actually, they got that pretty close. Except for all the custom leather. The answer is yes, by the way.

Dean Winchester: Sorry?

Ruby: Yes, the same thing will happen to you. Might take centuries... but sooner or later, hell will burn away your humanity. Every hell-bound soul... every one turns into something else. Turns you into us.