My sister is staying with us this week and she's learning how to get used to her brother-in-law's constant teasing. Most of the time, she picks up on the tone in his voice and says, "You're silly!" But sometimes, she doesn't have enough context to know quite how to react.
Like this afternoon. We saw someone carrying a tape player like this:
Christopher said, "Wow. Look at that guy's iPod." My sister stared without cracking a smile. She'd never seen an iPod quite like that before.