I would just talk to them if it would happen again.
I also have a noisy neighbour, and when I talked to him about it he was surprised and didn't realise we heard him so well...
Mine watches movies from +/- 3 am till 7 am, in his bedroom which is right under ours, and he has an exellent surround system, which makes not only the windows, but also the floor and our bed, vibrate. Fortunately only when his parents aren't home.
I also have a noisy neighbour, and when I talked to him about it he was surprised and didn't realise we heard him so well...
Mine watches movies from +/- 3 am till 7 am, in his bedroom which is right under ours, and he has an exellent surround system, which makes not only the windows, but also the floor and our bed, vibrate. Fortunately only when his parents aren't home.