There was a boy there. I'd guess he was 11. Short brown hair, no shoes, just socks. I don't know if he belonged to a professor or an older student that was in talking with a professor. He was laying on his back with his legs sticking straight up, forming a 90-degree angle against the wall. He was holding and playing what I believe was a PS Vita above himself. Occasionally, he would kick vaguely at the wall.
Replace the Vita with a Choose-Your-Own-Adventure or a collection of Sherlock Holmes stories or an issue of Batman or the Fantastic Four, and it was my 11-year-old self laying there vaguely kicking at a wall.