"It's all false syllogisms and inherent paradoxes," River said idly, taking one that said I am a figment of my imagination and sticking it to her skirt. She liked that one. "Pointless contradictions. That one," and here she pointed to the first vehicle, "had a sticker to tell people they don't like bumper stickers. I removed it so they wouldn't have something on their car that annoys them." It made logical sense to her.
"I'm River," she said, because she did have manners. "I was thinking of getting a sandwich...would you like to come?"