John’s litte “oh” face in Scandal in Belgravia (yesss dat acting, all the awards for Martin Freeman) when Irene said that he and Sherlock are a couple made me wonder what exactly went through his head at that moment.
And then I remembered a scene from the movie “Corrina, Corrina” which I thought was HILARIOUS as a kid (in which the widower and his housekeeper have basically become so used to their shared domesticity that they didn’t even notice when they kissed goodbye until seconds later XD)