umm i kinda of agree but i also think, well actually i dont have a theory but i have noticed that the songs that repeat themselves in our heads our often the most annoying repetative songs we have recently heard, kind of like the song superstar by toybox. 'I am a superstar with a big big house and a big big car i am a superstar and i dont care who you are.' ugh its melting my brain from the inside out
I don't mind when Good songs get stuck in my head, it's when silly ones out of the blue or from some commercial jingle get's stuck in my head that makes me craZZZZy! xd But I agree too. I'm usually not doing much of anything when this happens.