@samanddeaninpanties replied to your post “For your ask game – something sastiel related?”
What do they normally fight about? What would they say is the others worst habit?
I’d imagine they fight about little things, but usually only when one of them is in a bad mood already. I can’t see Sam or Cas trying to tell the other what to do (”you can’t be siren bait, that’s dangerous” or whatever) but I can imagine they’d snap at each other when grouchy. I can see Cas being a bit of an ass and starting fights when he’s grumpy and Sam just not putting up with it. I can see Cas making comments about how Sam leaves his papers all over the desk or how he forgot to move the clothes to the drier or didn’t remind him to take his angel blade. They’d bicker, and then one of them would throw up their hands and say “you know what? I’m done!” and then they’d stop talking for a while.
As far as worst habits go, I’m pretty sure Sam hates that Cas disappears for days on end. He doesn’t even take his phone, which is worse and it drives Sam nuts. That’s probably what Sam wants to fight about. Cas, on the other hand, thinks Sam’s worst habit is that he pushes himself too hard.