The Catcher in the Rye
She had a terrifically nice smile. She really did. Most people have hardly any smile at all, or a lousy one. "Ernest's father and I sometimes worry about him," she said. "We sometimes feel he's not a terribly good mixer."
"How do you mean?"
"Well. He's a very sensitive boy. He's really never been a terribly good mixer with other boys. Perhaps he takes things a little more seriously than he should at his age."
Sensitive. That killed me. That guy Morrow was about as sensitive as a goddam toilet seat. (8.9-23)