I would so I could see the late comers and have direct and easy access to the facilities. While in the bathroom, I could watch the water run down the drain, check the contents under the sink, make faces in the mirror, stare at the ceiling, play with myself, pretty much anything other than sitting in the hall having my mind go dumb ( or is it numb?) listening to the drivel coming from the stage.
Also, less likely to make eye contact with the speaker and not be as noticeable as I opened candy and gum, and so the moron behind me wouldn't notice my watching videos on the phone.
I used to pinch my sisters so they would cry, then I could walk them in the back.
Damn, I miss those days.