The Marvel Cinematic Spankingverse (oh god please don't sue me)
17 Jul 2012
"The last thing on Steve's mind was starting some sort of spanking frenzy among his team, but he can't focus on that right now."
Basically what it says on the tin.
Steve thinks Tony needs to act like a grown-up before he can go around pretending to be one. Tony thinks he'd rather pretend this whole thing never happened.
Sequel/missing scene from 5 Times An Avenger Got Spanked; apparently six spankings in one fic still isn't enough for you pervs. And, uhh, the author. But seriously, it won't make sense without reading that one first.