Cas was literally dying and Sam couldn't at least let him be in the bunker, or even consider what Cas' situation was.

Dirty talking before fucking next to the trash? You'll never know!!
Imagine hearing people refer to your brother as "Porn Guy"
Skipping scenes with rotten onions in it? More likely than you'd think
"Dean Winchester completes me." Bitch same you're not the only one
Why would demons get that drunk and need to sleep
"No, you listen to me. There's no trade. There's no meet-up. There's no nothing -- except the 100% guarantee that, somewhere down the road, I will find you, and I will kill you" if only demon!dean had killed rotten onions

"Every night I close my eyes, and all I can see is your brother." Bitch you're not the only one
"So. How you been feeling? On edge? Pent up? Unfulfilled?"
"You sound like a viagra commercial, you know that?"
"You sound like a viagra commercial, you know that?"
"Like I said, loser. With a capital L rhymes with 'You Suck'."
How dare Crowley ask a bisexual like Dean to pick a side that's not possible--
Demon!Dean was the voice of Dean stans and you can't say otherwise ajaja
Wanted to post a whole minute of rotten onions getting his trash ass kicked by demon!dean but even Twitter didn't want to see his trash face
"What did you think was going to happen, huh? You just stroll up here and say, 'My name is Inigo Montoya. You killed my father. Prepare to die.' And I'd just roll over?"
Dean's blood type is O. Probably O+. Good to know.
"Wow, you might actually be worse than me. I mean you took a guy at his lowest, used him and it cost him his life and his soul. Nice work."
"Lean mean Dean."
Here's to demon!Dean spillin' facts
Cinematic beauty is Castiel using his grace to pull Dean back from the darkness. A part of Dean's soul reacted to Cas
"You know, only humans can feel real joy, but ⊠also such profound pain. This is easier." Reminds me of Cas' comment about Dean in 15.13: "Dean feels things more acutely than any human I've ever known."
"You look terrible."
"You know, it wouldnât kill you to lie every now and again."
"No, it wouldnât kill me. I just-- you--"
"You know, it wouldnât kill you to lie every now and again."
"No, it wouldnât kill me. I just-- you--"
Dean putting Crowley on his list of embarrassing things he did as a demon. Oh Dean--
"On your knees!"
"Oh, wow, I'm awfully flattered--" the bisexual sarcasm
"Oh, wow, I'm awfully flattered--" the bisexual sarcasm
"Until we're suspended, the show must go on."
"Why don't you take a sub-step back ladies!"
"Although you can't spell subtext without S E X."
"Shouldn't it be 'deastiel'?"
"CasDean?"
Dean messing with the tie is adorable
"There's robots, and tentacles, and space." Okay but Robbie writing an episode with tentacles is what we needed--
Emotions aren't answering right now
I swear if the spn version of COWS is in the finale I might not make it out alive--