I just watch the movie yesterday and i also asked the question of how he "did" it and this was an awesome answer
When I watched the film I was thinking "Wow, so he just jumps right in there with no idea how they work".
Guess that's how. =P
This had me laughing so hard
even before the end. At the end I was loling so hard i nearly peed. oops...i just did. Oh well. Great as usual
awesome harry. awesome.