Hasn't happened to me, but I think that if you see something arousing enough everyday, you might just be desensitized to it (like seeing alot of violent movies and not being affected by violence as a result). It might just take something REALLY sexy for you to hear/see to get yourself out of this funk (*crosses fingers* Cat fight in the mall water fountain!!! Oh please God!!!
). Then you should be "back to your regular self".