I read this fic a while back and I honestly don't know where I found it, but I can't seem to find it again. It was about the boys going undercover at as a dom/sub couple at some kind of club. I remember that Dean was posing as the dom because he had been on the scene before. He dressed Sam up and liked the view. I feel like I remember Sam with his shirt off, and some shows going on at the club. Maybe there were masks? I think I remember Dean giving Sam a sort of crash course on how to Sub, and if I recall there was some kneeling involved. I found one that I think is kind of like it on Ao3, but it doesn't seem to have the depth I remember from this fic. Does anyone know what I'm talking about or has it been so long that I'm mixing up multiple fics?