Earworm

Today I found out it takes less than 14 seconds of 'Safety Dance' by Men Without Hats to play as incidental music on a tv show for it to get stuck in my head for the next 23 hours.

Though my usual brain screensaver needs to take a rest occasionally (recently on a train all it took for that earworm to return was overhearing a man on a train say 'nanoo nanoo')