Cheeky: What are YOU doing here?! Polite: Just a little grocery shopping Sarcastic: Anthropological research Trolling: (something vaguely plausible; bonus points if you work in the items in your cart...)
I was at a friend's house, and her little brother was playing Halo with his friends. I told them I loved that game, and they said I couldn't play because I was a girl. I asked for a controller. ... I pwned their little butts.