The Best of All Possible Birthdays

It was the fifth of July, and Tony Stark was incredibly pissed off. The celebrations the day before had been great, as they always were in New York. That wasn't what Tony was mad about. What made him mad was that, through all the celebrations, Steve hadn't mentioned once that it was his birthday yesterday. (Includes all of the Avengers, plus Jane, Pepper, and Darcy.)