Then, all of a sudden, I started to cry. I couldn’t help it. I did it so nobody could hear me, but I did it. It scared the hell out of Phoebe when I started doing it, and she came over and tried to make me stop, but once you get started, you can’t just stop on a goddam dime.

J. D. Salinger

The Catcher in the Rye. Chapter 23. Holden is upset and crying right after Phoebe gives him all her Christmas money to get him through until Wednesday when he is coming home.