Mid-adolescence crisis (noun) : A sudden urge around the age of 15 to relive your childhood. Mild cases consist of desiring to watch all classic movies from your childhood, while moderate cases include TV shows and rereading classic books. Severe cases include large purchases of classic stuffed animals, t-shirts, and various other memorabilia. Other symptoms include constantly moaning "The stuff you watch is crap!"
to younger generations, scolding children when they don't recognize a certain TV show, or quoting along to above mentioned movies/TV shows.

When you eat dirt for the first time and leave your family to build a shack in the woods