DEAN
He threw me to that vamp. I'm telling you, it's not my brother.
BOBBY
Well, then he's something we ain't ever seen before.
DEAN
Yeah, or it's freakin' Lucifer.
BOBBY
Did you call Cas?
DEAN
'Course I called Cas. He's not answering. Screw him. I can't wait anymore.
My favorite thing about lines like this is people always think of them as lines where Dean displays a desire for Cas to be useful to him, when they also show so clearly the exact opposite of that. When Cas answered Dean’s prayer in 6.03, it was because Dean had information of value to him about The Staff of Moses. ("You think I came because you called?") He then tells Sam and Dean he needs their help to get the staff and they help him. Cas flew away so abruptly—as soon he got what he wanted—and has been radio silent since. As I’ve mentioned before, Dean has no reason to believe Cas wouldn’t ask if he wanted help (especially now that he’s cleared the air on the reasons for his previous silence). Cas fully controls the means of communication between them. He can come and see Dean any time and say "I need your help". Dean gets a one-way line and has no clue if the messages go through. Cas clearly demonstrates in 6.03 and in this episode, 6.06, that he'll only show up if Dean can be of use to him.
DEAN
Castiel? Hello? Possible loose nuke down here, angelic weapon. Kinda your department. You hear that, Cas?
CASTIEL
Hello, Dean.
DEAN
Are you kidding me? I have been on red alert about Sam, and you come for some stupid horn?!
CASTIEL
You asked me to be here, and I came.
DEAN
I -- I've been asking you to be here for days, you dick!
"You asked me to be here, and I came"... but that's... extremely misleading. Cas didn't show up because Dean asked him to be there. Dean had been asking him for days to opine on Sam after Sam let him get sexually molested by a vamp. Cas very clearly showed up for no other reason than Dean finally mentioned something of use to Cas—an angelic weapon. He showed up because Dean was finally useful to him again. That's exactly why he showed up in 6.03, and it's exactly why he showed up here. And yeah—Cas IS a busy guy! There's nothing wrong with that—but the misleading framing where Cas claims he's here to help Dean when it's the other way around—he's here because Dean has information that can help him—is literally just lying.
1994's Bill Morrison poster for the segment "Time and Punishment" of the episode "Treehouse of Horror V" (6x06) of The Simpsons.
Monty B (Comic Art Fans) : "This was done for the poster artwork of the Time and Punishment segment of the Treehouse of Horror episode V. "Treehouse of Horror V" is the sixth episode of The Simpsons' sixth season and the fifth episode in the Treehouse of Horror series. It originally aired on the Fox network in the United States on October 30, 1994, and features three short stories titled The Shinning, Time and Punishment, and Nightmare Cafeteria."
DEAN
Hey man, I'm just trying to figure this out because... something's different with you. You know that.
SAM
Yeah. Yeah, I know.
DEAN
Really?
SAM
Yeah. I mean... I've been hunting non-stop for the past year, kind of... kind of on the wild, you know? So, yeah, I suppose I'm a little rough around the edges.
DEAN
Yeah, I get that. I just don't think I'm getting the whole scoop. You went to hell, Sam. And believe me, I know what that does to a guy.
SAM
To you.
DEAN
What?
SAM
You know what it does to you. It -- it tortured you. You know? I think it still does. But, Dean... I'm okay.
DEAN
So you're saying, what, that -- that you're stronger than me?
SAM
[ Chuckling ] No. Just saying we're different.
SAM pauses, slaps the roof of the Impala and gets inside.
Had to come back to this fucked up thing that happened in 6.03. Like the entirety of the season 4 "Dean is weak for going to hell and not getting over it instantly" narrative was not enough we also get season 6 soulless Sam spilling the juicy details of Dean's trauma to their asshole cousins without a thought and also this shit.
"I always looked down on you because you were quirkless. You were supposed to be beneath me... but I kept feeling like you were above me. I hated it. I couldn't bear to look at you. I couldn't accept the way you were. So I kept you at arm's length and was mean to you. I tried to act all superior by rejecting you... but I kept losing that fight. Since we got into U.A... Nothing's worked out how I thought it would. Instead, this past year forced me to understand your strength and my weakness. I don't expect this to change a thing between us, but I gotta speak my truth. Izuku... I'm sorry for everything."