We also had a wonderful moment [with Spielberg] when we were having this odd ‘app off’ with out iPads and I said, “You’ve got to get this.” It was this thing called Atomic Fart Machine [laughs]. He went into this ‘Simon Says’ function, which is like a drum kit, and you have to follow the instructions and hit the different buttons and colours. He played it non-stop for about 10 minutes and became really drawn into it and quite comprehensive. Tom Hiddleston and I were just stood there, watching the greatest director of our lifetime doubled over the floor laughing while he playde this fart noise game [laughs]. It was very, very incongruous.