It seems not many people just pay attention and think about what's being discussed to pass the time. x3 I try to do that, even if the content is something I already know. But, when I really can't do that, I probably am ripping up my fingernails. I used to do work for other classes while in high school, but at uni I don't usually have all my books with me so that doesn't really work out.

i usually doodle on my notebook , or hide behind a book and sleep . haha :) !