Other People's Oxygen

For reasons that have never been adequately explained, this university is run like anarchy, on meth. Mondays, Wednesdays and Fridays classes are 53 minutes long and start at 7 minutes after the hour (don't ask, I don't know why) and on Tuesdays and Thursdays classes are 90 minutes long and start on the hour or the half-hour. This means that the cafeteria complex on the main part of campus is mobbed with students at different times of the day on different days of the week. As a full-time researcher and profligate user of ether I tend to just wander out of the lab whenever I am hungry and go acquire food. Mostly tacos. I often find myself in an empty cafeteria, which is just great, faster taco kinetics. Today, by virtue of the Byzantine class schedule I managed to find myself in the midst of a large number of our undergraduates. I forgot my iPod, which I regretted almost immediately as a girl in front of me and another behind me started off on some high speed vapid sagas involving copious usage of "and like, then I was like...". I was quite tempted to ask 'how does it feel to know you are using other people's oxygen?'. Intelligence, however, intervened and I decided that it would be less of a hassle to just think about thermal gravimetric analysis while I waited to get over the activation barrier and order my tacos. mmmmm, tacos.