Grown-ups who refuse to be grown-ups.
Yeah. You know what I'm talking about. I see you nodding your head already. How many adults do you know that have never become adults? These are the people who still don't know high school is over. They revel in teenage drama, expecting everything to be about "me me me." They blame others for their problems, instead of taking responsibility. They look for the easy way out, instead of doing something right.