Sure you want to know?
Positive?Okay, spoiler coming, and if you saw an advance screening of the film or watched it overseas, you have NOT seen this yet. In the movie, at the end of the big battle in the third act, a completely exhausted Tony Stark says to the other members of the team that they should all try "Shwarma" together, that he's heard it's great. Apparently at the very end of the credits, there's a brief scene of the entire Avengers team sitting around quietly eating shwarma - this would be (in the timeline of the film) right after the end of the battle, and you can clearly see the restaurant they're in is trashed, so basically after Tony mentioned it to the team. So yes, out of sequence, since the very end of the actual movie shows them out of costume going their separate ways. While I want to think this is made up, it also sounds exactly like something Joss Whedon would do, and makes for a special treat for opening day audiences. Check out the pic below which popped up on Tumblr. Thoughts in the comments! Source: SuperHeroHype