Alright so this is driving me crazy. I don't remember anything about the movie except for one scene. I think it was in a bar and two guys were talking shit at each other. One guy says something along the lines of "yeah I know you. You were heading out the back door as I was coming in the front." or something like that. Any ideas?

Sounds like the punchline to a dirty joke.

I was going to say Brokeback, but thought that was too easy.

the most recent bar scenes i can remember are from Gone Baby Gone, so i'll guess that.