Call Me Sir
There seems to be a bit of an uproar (on the internet anyway) about Manu, er sorry, Monsieur le président de la République, dressing down a young lad in the crowd for not showing respect.
I think that Mr. Macron acts fairly and it is far from a dressing down. He explains why it wasn't appropriate to use his nickname on that occasion but goes on to ask the boy about his exams and answer a question about his plans. He spent a lot more time with him than many politicians would have done.
There are some interesting posts and links to the video here as well as some interesting phrases:
faire l’imbécile - play the fool
faire le singe - monkey around
s'amuser de façon espiègle, folâtrer - to amuse oneself