Have you ever fallen asleep in class? I know you have, even if you won't admit it. That means you must be famil"the head nod". This is where your eyes close and your head slowly drifts towards the floor. Once your head drops, something inside you reminds yourself to wake up cause you are in class, so you wake up momentarily and your head springs back up. Whether you admit to doing the nod or not, I can assure you that when someone is doing the nod in class it is often the highlight of the day and often unforgettably hilarious!