Right now, I have "Girls and Boys" by Blur, because I was just reading the "I think my friend is bisexual" thread.
Back in college, my friend developed a method for getting an
"earworm" out of your head; just sing "Goin' to the Chapel of Love". Bing, no more earworm. Of course, there's no way to get Chapel of Love out of your head, but that's a different problem.