6.09, Clap Your Hands If You Believe
aka that one Soulless!Sam episode I sincerely enjoy.
also, in s15 can we FINALLY revisit fairies? If only to show us that Dean still has this special power to see them? PLEASE?! (once again, one of those things I wrote canon case fic of-- Hurry Up And Wait-- in case you despair of the show ever actually doing the thing for us) :P
Because really, Dean's ability to see the fairies while Sam couldn't is just a really on the nose metaphor for what Dean understands about the world with his soul vs what Sam completely lacks without it.
SAM: Yeah. Okay. Look. Brings up a question. So, say you got a soul and you’re on a case, and your brother gets abducted by aliens—
DEAN: Yeah, then you do everything you can to get him back.
SAM: Right! You do, but, what about when there are no more leads for the night? Are you supposed to just sit there in the dark and suffer, even when there’s nothing that can be done at that moment?
DEAN: YES!
SAM: What?
DEAN: Yes, you sit in the dark and feel the loss.
SAM: Absolutely! But couldn’t I just do all that and have sex with the hippie chick?
DEAN: No!
SAM: It’d be in the dark.
DEAN: No you couldn’t because you would be suffering, and you can’t just turn that off for the night.
SAM: Why not?
DEAN: Because if you had a soul, your soul wouldn’t let you.
SAM: So you’re saying having a soul equals suffering.
DEAN: Yes, that’s exactly what I’m saying.
SAM: Like, the million times you almost called Lisa. So you’re saying suffering is a good thing.
DEAN: I’m saying it’s the only game in town.
cue that scene at the end of the episode where Sam defeats the fairy by dumping a salt round on the floor and forcing the fairy to count all the grains, giving Sam the chance to read the banishing spell out, while Dean gets his ass kicked by another fairy while locked in a jail cell... calculation vs suffering.
Sam, cold and calculating as he is, learns that out of desperation to save his business, he made a deal with the fairies, and didn't think to question what they would actually take. He didn't understand they'd take the firstborn children of the town... By the time he realized, it was too late.
WAYNE /LEPRECHAUN: I could see that right off. You’re missing a certain piece, right in the center, ain’t you?
SAM: Says who?
WAYNE /LEPRECHAUN: We fairy folk? We’re all about energy. And the human soul gives off a certain perfume. Your soul is far away. But not completely out of reach.
SAM: Is that so?
WAYNE/ LEPRECHAUN: Sam, I can get it back for you. For a price.
SAM: That’s adorable. It’s locked in a box with the devil.
WAYNE/LEPRECHAUN: Your devil. Not mine.
SAM: There’s no freaking way a leprechaun can do what angels cannot.
WAYNE/LEPRECHAUN: Angels. *laughs* Please. I’m talking about real magic, sonny. From my side of the fence. Got a way of getting in back doors.
SAM: So you’re my blue fairy? You can make me a real boy again?
WAYNE /LEPRECHAUN: When you wish upon a star.
Sam decides this isn't a deal worth making...
DEAN: You think Lucky Charms really could have , you know, soul to sender?
SAM: Come on. It’s crazy to think. He did talk a good game though.
DEAN: You said no. Why?
SAM: It was a deal. When’s a deal ever been a good thing?
DEAN: I’m just trying to figure out how it works in there.
SAM: Dude, I do still have all my brain cells. If anything, my brain works better now.
DEAN: Just making sure that’s where your head’s at. That you’re not having second thoughts about getting your soul back.
SAM: Oh.
DEAN: You’re not, are you?
SAM: No.
But Dean really has his doubts... I mean, Sam was willing to deal with Crowley, doing his dirty work in the vague hope of Crowley actually returning his soul eventually, but wasn't willing to even talk to the leprechaun? Yeah... there's a valid reason for Dean to doubt. Especially in an episode where it’s made clear that he’s seeing things that Sam’s incapable of...
Last but not least: Oh, Dean, you sweet summer sausage: