these fries are my territory

My wife explained to me that she gets a small because everything else is enormously sized. Were she to get her own fries, even a small wouldn't get finished. It's nicer for her to share my food because then she doesn't have to worry about wasting what she couldn't finish. Plus ordering a large meal for us to share costs less than an average size and a small. Took years to get over being possessive of my food though.