This is the rule on public restroom conversation: if you are continuing a conversation that started before you entered the stalls, it is permissible to continue it as long as both parties reciprocate. It is not permissible to strike up a conversation while you are both in stalls unless you are either in need of toilet paper or a feminine hygeine product.

I don't understand how people can spend so much time on cell phones. I keep one on me to coordinate the car I share with my brother (two calls a week, at most), and so that the barn my horse is at can get a hold of me in case of an emergency. Aside from that, it's good to have around when I'm driving, trail riding, bicycling, xc skiing, or wandering out on my own.

My mother doesn't even have a cell phone. She's got OnStar in her vehicle and spends the rest of her time with people who DO have cells!