Most likely originated around the time of Hanson's "Mmmbop"; an ear worm refers to any song that is so catchy, and at the same time extremely annoying, that it feels like a worm has crawled into your ear and eaten the intelligent parts of your brain so that you hum the song all day long, no matter how much you hate it.
-(Britney Spears' "Toxic" begins to play)
- Not that damn ear worm again!!!
Noun - A song, or part of a song, that gets stuck in your head and goes on and on and on.
"I've had an ear worm for days since I heard the team team sing "100 bottles of beer on the wall" in the bus coming home from the game." Common ear worms:"The song that doesn't end," the theme from "Seseame Street" the bass rif from In-a-gadda-da-vida, the music from Mario and other video games, most commercials.Cure: Finding another less annoying song to replace it.