Nub

So I think probably the two funniest words about the body that arent that gross are the words Jugular (as in your throat area) and Nub (as in a missing body part type thing). Now, please dont take this the wrong way, I am not making fun of people with Nubs when I say this. I have some very good friends with nubs and I probably shouldve had a nub, so yeah. (PS is there a more scientific name for nub please? if you know it, let me know.)
Anyways, so where I am I going with this?
Do you ever imagine yourself doing something you cant do? Something that you maybe could do at one point in your life but cant do now?
Like, sometimes I honestly feel like a person who had a limb removed and now they have a nub and they still feel like the whole limb is there but its not.
Like my abilities to be slightly invincible or at least the ability to heal fast when It's proven that I am not invincible.
I used to be able to do so much more like I could skateboard better and bounce off the walls and do crazy stuff without getting hurt. Not anymore. I guess I'm getting old. Does that mean I can tell people to respect their elders now and that means "hey respect me!" I use to hate it when people told me when I was little. I had issues with authority. So yeah thats all for now. I'm going to continue life and try to ignore my nubby feeling.