Petra, my hair used to be down to my waist, so not as long as yours.
Like your mum, I got told to cut it off. Eventually I did and its now down to my shoulders. But before I got disfellowshipped (for sticking to what the Bible really said) and when it was still long, I would sit towards the front of the hall. Sometimes, when I looked up, I would shake my head and flick my hair back. I didn't realise I'd sometimes catch the face of the person sitting in the row behind with my hair when I flicked it.
I guess if it had been you, you'd have managed to get them two rows behind. That would have been spectacular.