It reminded of another scene where this time it was only Clint and Tony and they were getting drunk again because Steve had broken up/rejected Tony, they were extremely drunk and then Natasha turned up and wanted to join in, at that stage Clint and Tony had become shirtless and one of the prerequisites for joining was that they anyone joining had to be shirtless too. Natasha then shrugs and strips down and they all get drunk together complaining about exes and do all sort of drunk shenanigans.
I know this is a really shallow thing to remember of a really good fic to read, but I now really want to re-read again and there are so many good avengers fic. It turns out all happy in the end with Tony/Steve pairing.
Anyway I hope someone can help