Was it "Purple People Eater"? hehehehe

(In case you didn't see this yesterday: http://www.democraticunderground.com/1018774620 )

but of course it's not rock music by any stretch of the imagination.

then that song was playing in one of them, bled over into ours and you picked up on it.

Be grateful that's all yours is doing. For an unfortunate few they can generate "Hey! Wouldn't it be cool to qualify for a Darwin Award?!"

Usually, when this happens to me, there's a much simpler explanation.

Yesterday I got stuck with a barely-remembered song from the mid 1970s, because I heard part of a much later song that had a similar tune. Frequently, even though I'm not paying attention to it, I will hear something playing in the background at the supermarket, and that will get caught in my head.