1. corn earworm.
earworm [eer-wurm] Informal.
1. a tune or part of a song that repeats in one’s mind.
verb (used with object)
2. to work (itself or its way) into a person’s mind: The Pepsi jingles have earwormed their way into my head.
Origin: 1980-85; loan translation of German Ohrwurm ‘catchy tune, earwig’
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.