shalalitus

shalalitus (sha-la-ly-tus) is the phenomenon, that occurs when your brain radio decides to randomly attack you with bouts of "shalalala omona shalalala imma shine" which are the lyrics to the song 'Shalala' by Lee Taeyong, a South Korean singer & rapper & allegedly a garden fairy.

"I was at work and had to pause because my shalalitus flared up again."
"She couldn't stop humming due to her severe shalalitus so we had to play the whole song to get her to stop."