A phobic disorder consisting of an irrational fear of teenagers who incorporate more than 10% of Urban Dictionary into their lexicon. Eponymously named after Diablo Cody's "Juno MacGuff" and the fear that some people have of teenagers that speak in that manner.
Person 1: Why are you avoiding her?
Person 2: Listen to the way she talks? She's too hip for me.
Person 1: The problem isn't her vocabulary, the problem is your junophobia.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.