You walk in to the School's cafeteria, just to see the other students casually walking around, holding their food trays - some of them sitting at the tables and eating their "Disgusting" food.
Zim - The weird kid, who is considered to be an Alien (ONLY by Dib, but no one believes him anyway, because they're dumb), was sitting at one of the tables, shoving a spoonful of food in to his mouth, before he started choking and coughing, spitting out the food with a goofy and frustrated look on his face. He then stuffed his whole face in to the plate with the remaining food, before knocking over the tray and hopping on to the table, stomping it with his feet, and then falling on to it, now laying on his back. No one even cared, what was Zim doing, nor who he was - and that was kind of good, because Zim HAD to pretend to be a human.