I was in a restaurant one time in a small town in Arizona. It was one of those home-cookin'-ma-and-pa types. As I reached to open the bathroom door, an old woman and her daughter opened it and walked out. She chuckled as she told me it wasn't a "two-seater" and added "you are too young to know what that means!"
As a child, I wasn't the least bit bothered by the lack of indoor plumbing at the Cooley Farm. It's probably because everything was so well done. We did have a hand pump that brought up water from the well in the kitchen. I do not remember bathing, except in the creek, which pleased me to no end. And the two-seater was very clean.
A breezeway had been added on to the farmhouse at some point and this attached to the indoor outhouse. Sounds smelly, I know, but it wasn't. Someone knew what they were doing. I think it sloped and drained away from the house. It had two holes cut in the bench so two people could go at the same time.
My best memory involves two colors; Cobalt blue, and Whelp red. The interior of the outhouse was painted a brilliant, cheerful Cobalt. The "Whelp red" was from the butt comparison that Walt and I did in the outhouse one day after a good switchin' by mom and her willow branch.