1. Your grandmother/grandfather/Aunt-Suzie-whom-you-never-met-but-trust-me-she-was-nice-and-it's-a-shame is dead.
2. You're letting a girl named Katherine distract you from your studies.
3. Babies are made through an act that you will eventually find intriguing but for right now will just sort of horrify you, and also sometimes people do stuff that involves baby-making parts that does not actually involve making babies, like for instance kiss each other in places that are not on the face.

It never meant:

4. A girl named Katherine called while you were in the bathtub. She's sorry. She still loves you and has made a terrible mistake and is waiting for you downstairs.

Auteur: John Green