Part of JD and my routine is to take a shower in the morning. It came about because he didn't transition from being bathed in a sink to a full-sized bathtub. I had purchased a stool for my wife to ease leg-shaving, as our shower is a stall, not inside a bathtub. JD stands on that stool and plays with tub paint (thanks Jay-Jay!)
I am able to wash myself first, then I turn to JD. He's generally a willing participant and doesn't mind the water coming down on him. He's even learned to enjoy it; I spy him with his back to the water, holding still with his head turned down slightly, letting the water hit his back.
JD gets washed as thoroughly as I wash myself, including his private parts. Penises and anuses need washing, too. Especially when they're subjected to sitting in their own excrement and feces for any length of time. Plus, crumbs, milk, and soup get down in there. Don't ask me how. It's no big deal, I just wash him as I would wash myself.
But now I'm going to have a daughter. Say what you will, but it's different. Frankly speaking, I don't have a vagina. I have only dealt with the vagina in a more intimate manner.
It's not that I fear it or anything, it's just an unknown. I've had plenty of practice on myself. Do I ask my wife to practice on her?
There are always unknowns when beginning something new. This is my new territory. Women probably have the same questions that men do in this respect. From a male's point of view, washing the penis seems rather simple - just don't get soap down the tip; it hurts. But for a woman, it's all inside, but some parts are more inside than others.
As usual, I'll talk to my wife, to playgroup moms, and read a book or two.
Then I'll get to the task and figure it out for myself.