Anyone who gets that Kingdumb S*** stuck in their head, this is quite normal. If you have been there long enough to have heard them several times or if you listen to them in lieu of music, it's going to get stuck. You probably had the same problem when it's the middle of summer and some Christmas song pops up in your head while you were a Witless. It's the same effect.
Getting Kingdumb S*** out of your head is pretty close to impossible on a permanent basis. This is because it's programmed into your brain. The good news is that you can listen to other music, such as that "evil disco" or that rap and heavy metal that they stopped you from enjoying while you were a Witless. Whatever your favorite music is, get as much of it as possible. Lost hits that you forgot all about are at a premium--that's what the downloads are for. Listen to that for a while. Or develop a taste for a new style of music that the Tower once stopped you from listening to. Either way, that Kingdumb S*** will fade in time.
Above all, don't be too disturbed if, even after many years, you still have it pop up. This is especially true if that's all you listened to or if you were in all your life. You are not alone in this. And when it does happen, just remember that it was so short a time ago that you had this problem with Christmas music.