Pure non-fiction books about puberty and youth? Not funny. Stories and jokes about pubescent children and teenagers? Not scientific. "Chill out!"? Funny and scientifically grounded. The trained educator and cabaret artist Matthias Jung combines fun with science and offers humorous tips for dealing with growing children. He knows what goes on in the brain of a fifteen-year-old and which hormones cause unrest. He masters the language of teenagers and can translate it into German. He is able to make it clear to all parents what strange creature is living upstairs in its messy refuge. As informative as "Darm mit Charme," as practical as Martin Rütter, and as entertaining as Eckart von Hirschhausen.