check this out, apparently some college professor canceled his classes because of "the portal flu"
Because so many of his students were calling in reporting they were sick, which he knew was because of Portal 2 being released, and couldn't make it to class, he just canceled classes altogether.
Ha - maybe it was all so he could play it too!
http://www.tomsguide.com/us/Portal-2-GLaDOS-FPS-PC-gaming-Valve-Steam,news-10894.html