A lexical gap is an absence of a word in a particular language. Recently, I’ve been thinking of a few lexical gaps in English that need filling (or minding):
1. Getting a song stuck in someone else‘s head.
2. Running out of interesting things to do to procrastinate. Like boredom, but when there’s something you should be doing that you’re avoiding.
3. A person you’ve never met but know lots about because you follow their blog. They aren’t a friend. They aren’t an acquaintance. But you know the names, faces and personalities of their significant other, children, and family pets.
megolomaniac 
1) ear worm?
2) I’m sure the german’s have a word we could adapt.
3) pretty sure the word you’re looking for is “Stalkee”
I’m laughing out loud at “ear worm.” How would you use it as a verb? She ear wormed me?