Mirumalum
Like an earworm; When you remember enough of a song that it's stuck in your head, but not enough to google it.
Friend 1: "God, I've had this song stuck in my head all day"
Friend 2: "How does it go?"
Friend 1: "I don't know"
Friend 2: "Sounds like you have a mirumalum."
Friend 2: "How does it go?"
Friend 1: "I don't know"
Friend 2: "Sounds like you have a mirumalum."