So I'm 18, and I've always acted 4 years younger. Essentially, growing up, I watched stuff like Peter Pan and Codename: Kids Next Door, which taught "Never grow up". I guess I took that to heart as a commitment lol

When I approached puberty, I started to fear what was happening to my body. I'm a guy, so I, as it would be expected, got hair. Everywhere. What I did, was use my parents razor, and I shaved all the hair off of my body. I feared my parents seeing my body changing. Worst part, is I still do! I have not worn shorts, or been shirtless in front of my parents for 5 years! I know what many if you would say, "Whats the worst that could happen? They make a snide comment?" And that's probably the worst. But for some reason, that scares the crap out of me!

I look at guys my age, and even younger, and I'm honestly amazed how they can go in a pool, gym, etc. in front of their parents, I'm amazed how they wear tank tops in front of their parents, I'm amazed how they even do something as simple as wear shorts in front of them. I want to act my age, I really do, but thinking about it and thinking about my parents, simply put, terrifies me and fills me with anxiety. I've gone through great lengths to make sure my parents don't see me shirtless, or see my legs or anything revealing like that. I have a descent body, so it's not that, but it's what puberty has done to it.

So, my questions are:

How do I act my age?
Why am I so terrified to show my adulthood?
What can I do, to not be so terrified of wearing something as simple as shorts around my parents?