I watch youtube before I sleep (I know, bad habit :P) and sometimes I forget to put it on charge before I start watching, and when I fall asleep, youtube autoplay continues to play random crap over and over (usually ends up with https://www.youtube.com/watch?v=YKAblynZYhI somewhere in the chain)

OK the point is, more often than not I've woken up in the morning with youtube still playing. Absolutely insane.