That happened to me the other day! I was working with a girl who I'd just met for the first time that day, and we were driving to our second event (or rather, I was driving her) and she wanted to stop at McDonald's, so I obligingly went out of my way to take her through the drive-through.

Her: What do you want?
Me: I'm fine, thanks.
Her: What, do you not eat at McDonald's? Do you eat?

Seriously, how rude can you be to someone who is working with you and driving your arse around town? Next time she can damn well take the bus.