If the ambition is to provide two hours of instantly forgettable, popcorn-munching escapism, it succeeds.

The acting in this movie is really good.

Unshakable, witty and deeply felt, the film will be paying emotional dividends for a long, long time.

Watching it is like watching the spectacle of a class clown at their best: you laugh at their jokes, instigate their defiance, and "ooooh" when they get in trouble.