T-Rex: My new book is called "BILLY THE TEEN! BILLY WAS THE TEEN... WHO LOVED BEING A TEEN!"

T-Rex: (It's aimed towards teens!)

T-Rex: So, after clearly being established as a teen, Billy goes off and meets some other teens! They become friends and they hang around outside fast-food restaurants, and sometimes, they go in and get some fast food FROM the restaurant. Later, Billy announces that he just plain loves being a teen! All his friends nod their heads in ready agreement.

Utahraptor: And then what happens?
T-Rex: A few pages in, Billy realizes his 20th birthday is coming up!

T-Rex: He'll no longer be a teen. It's a disaster! He's TERRIFIED. He's waking up in cold sweats. Billy's certain that when he becomes 20 he'll lose something vital of himself.
Utahraptor: And then?
T-Rex: And then... he dies of a heart attack!

T-Rex: But like, 50 years later, you know? Long after he's come to terms with everything. The vast bulk of the book details Billy's entire adult life, and the last page says "The actual title this book is 'Mr. Bill Peterson, Who Came To Terms with His Life Over 60 Years'".