Telling your father about PE
Generically speaking I would. But since I know that my father is not the kind of guy who would practice PEing I will never tell him. Hell maybe in the future I will get proud of my gains and show him what I got and then explain how I got it.
When I was like 6 years old I remember asking him to see a doctor for me because I thought my dick was too small. He said that my size was normal and to don’t bother with it again. Once when I was 12 years my father saw me naked getting out of the shower and then some minutes after I remember that I heard him talking on the phone with a friend and he said something like “hey you gotta see my son, he is just 12 but he already is a mean hairy motherfucker” (he was talking about my pubic hairs hehe).
So I think my father would somewhat get proud of having a 11 inch dick son… yea maybe in the future I will call him for a talk. It would be VERY WEIRD in the beginning, since I don’t have what you would call an open talk with my dad.
(by the way I just turned 20 and still live with parents)