From The Catcher in the Rye, by J.D. Salinger
She thanked me and all when I had it [a little girl's skate] tightened for her. She was a very nice, polite little kid. God, I love it when a kid's nice and polite when you tighten their skate for them or something. Most kids are. They really are. I asked her if she'd care to have a hot chocolate or something with me, but she said no, thank you. She said she had to meet her friend. Kids always have to meet their friend. That kills me. -- J.D. Salinger, _The Catcher in the Rye_, p. 125