I'm looking for a fic I read kind of recently, but I didn't think to save it.

It's a short one where Sam and Dean get like to pretend they're a couple where Dean gets abused by Sam. In the story, they're in an elevator with other people, and Dean says something along the lines of "Next time don't hit me so hard; dinner was only a little bit burnt" and Sam acts out the part of an abuser. At one point, Dean's shirt hikes up a little and the people in the elevator see the bruises on his ribs (which are from hunting a poltergeist, not Sam actually hitting him) right before Sam and Dean exit the elevator. That's all I remember, sorry.