Crazy, I went to boarding school 2009-2011 and our dinner hall was always loud with talking and laughter. However sometimes it would slowly get quieter until the room went silent with everyone looking oddly at each other, then a massive wave of laughter would erupt.

Some weird phenomenon.

I also remember downloading Froggy jump on my iPhone and playing it with friends, but you certainly put your phone away more than you do now. You also had it taken off of you if you were on it when you shouldn't have been. If my parents found out they took my phone off of me, they'd probably crack it at me because I wasn't paying attention. I get the feeling many parents might just get angry at the teacher rather than their child.