Ah, yes, the evil ear worm, which sometimes has our hearing seemingly sticking on the same song, over and over. Polls show that a stunning 90% of us have experienced these hearing parasites and nine out of 10 report having them at least weekly.
Who remembers these classic offenders? "Who Let the Dogs Out?" or "The Macarena," and my personal favorite, "Call Me Maybe." So what does science tell us about this musical torture? Not a whole lot yet but we're working on it.
Some say ear worms keep our brains occupied when they have nothing better to do. Others believe that they cause a part of our brain called the auditory cortex to itch, meaning we have to scratch it.
The oh, so helpful cures include singing the whole song to its end. Or occupying your poor brain some other way, such as solving puzzles.
Critical thinking challenge: How can your brain have an itch?