Wednesday Poll: I've Got (Ear)worms

Lately, I seem to be having issues with earworms--you know, those songs that get stuck in your head that you can't get rid of.  It's so weird because, while sometimes I can figure out where I've picked them up (a week of "Jenny From the Block" after watching Jennifer Lopez in "Enough"); other times they just seem to come from nowhere ("Jeremiah Was a Bullfrog" as soon as I opened my eyes at 6:30 Monday morning).  I'm starting to wonder if the dogs are secretly playing annoying tunes to me in my sleep.

So, for this week's poll:

What is the worst song you've ever gotten stuck in your head?  Longest duration?  And, most importantly, how do you make it stop?

Comment and discuss.