I had to write and post this little piece of crappy writing because all I could think of after 13x02 was “Cas didn’t smite the dentist? That would mean he was an angel while going to a dentist, and why on earth would an angel do so?”
Sometimes Dean isn’t so sure if he’s interacting with some kind of stubborn mule instead of an angel, the mighty celestial being of the Lord. He has spent solid fifteen minutes trying to explain Cas that it would be a good thing to adopt some human customs, including going to a dentist.
“Yeah Cas, I get that you don’t wanna go and shit, but honestly, you should. See, even I’m going! Being a human means that sometimes you have to visit a good ol’ dentist.”
“Dean. I understand that being a human requires certain things like eating and drinking and urinating. But sitting in an uncomfortable chair while someone is prodding in your mouth certainly isn’t one.”
“Aww, come on man! Sam is with me on this, aren’t you Sammy?”
Sam raises his gaze from his lap, where he’s holding his laptop. Honestly, that oversized moose has probably married it at some point. Only rings are missing.
“Cas, Dean is right. It isn’t so bad, actually. Maybe you two can crab some burgers afterwards or something.”
Dean sights in relief when Cas shrugs and seems to consider the idea. So maybe not THAT stubborn mule, after all. Dean mouths “thanks” into the general direction of Sam, but only gets (also quietly mouthed) “don’t get me into this, he’s your angel” back. To that Dean only shrugs. He’s heard enough jokes about him and Cas by now to not to be startled by them, but coming from Sammy, it is quite annoying. So he ends up just flipping the bird to Sam. Just then Cas decides to speak.
“I’ve decided that I’m going with you, Dean, but I want burgers.
“Wasn’t that bad after all, was it?”
“No Dean. Though I wouldn’t exactly describe it as a pleasant experience.”
“Nah, me neither. At least you didn’t smite the dentist guy, or I don't know, accidentally hurt him with your angel powers.Wouldn’t be good to smite the poor guy”
“Yes, I thought that it would be quite unhelpful.”
Dean hums in approval, mouth full of a delicious bacon burger. Cas is sitting on the opposite side of the table, in a small diner booth, eating an identical burger, while Dean is stealing glances of him. Cas looks completely normal (very happy tho), wearing his stupid oversized trenchcoat, but yeah. It’s in these moments that Dean understands that he might be a little bit gone for that stubborn mule with a trenchcoat.
