I would never have or never will ask my dad about cock size. I have never seen him naked and really NEVER WANT TOO! LOL.
OR an uncle.
Now, when I was 15, my aunt's husband who was in his late 30s I saw naked. I spend the night there with my cousins, and we were late for Mass one sunday, and he told me to hop in the shower with him to get it over with, they only had one bathroom at the time. I looked of course, and he was huge, but he never said anything about his dick or even sexual it was just a shower an innocent one.
Landon
Landon, there is a difference between seeing because of circumstances and wanting to. You were in a great hurry in getting in the shower with your aunt's husband. Yeah, you looked. It was just a shower as you put it.
You most likely grew up in a home with multiple bathrooms, and that kind of situation just didn't happen with your dad. But, there was a time when most families had only one bathroom. To get everyone ready, there had to be a schedule. When possible guys were in the bathroom by themselves, but sometimes my brother and my father were both in the bathroom at the same time.
In the mornings, when we were awaken to get up for school dad was already shaving. I never even once wet the bed past being a very small child, but once I actually got out of bed and started moving around, most mornings if I had waited until everyone had cleared out of the bathroom, I would have wet myself, especially as a preteen. So my brother and I would pee in the toilet while dad was shaving. When we were younger we did that together, but that stopped as we got older.
So had you been raised in a situation where you and your dad had been in the exact same situation when you were younger, especially prepuberty, you would have a story.
My sons have similar stories as you do. There wasn't near as much seeing each other in the nude because we had one bathroom for my wife and me and the other bathroom was for the boys. They decided when to start locking the door getting privacy from each other. When they were little they weren't modest at all. They made those decisions about modesty.
I gave the talk to my sons, but I also taught that at school so it made it easier I think. There was never any show and tell in the discussions. Nor is there a need to.
If a boy has never seen an adult penis especially if he has no father, there are sites for teens with drawings that are better than just pulling pics of the LPSG. But will work.
There was the post about how to clean our bodies. Yes, my parents both of them showed me how. I was three years old at the time. They would check from time to time to see if I was doing a good job until I was about eight. How did they check? They had me clean my penis and see if I was doing it right. Most times they would just ask and that not very often.
Boys shouldn't have to be told when they enter puberty how to clean their penis. Unless there is something dad missed that I haven't learned yet, puberty doesn't change how the penis is cleaned.