Okay,
For starters, this isn't another thing about bugs, so don't worry. It's about earworms-- a melody tune or song that you get stuck in your head and it won't come out no matter how hard you try. This happens to me often.
Just the other day, I had this happen to me. The song was by Clay somebody, I think, and it was called "Franklin Park.
Arg. I don't particularly like that song, but it was in my head the whole day none the less! What a bummmer! Anyone else??