I have a little hair on my balls and I can cum but I have no armpit hair and I'm still the same size and I get boners easy like just by seeing a hot girl. Is that normal? I just turned 15 by the way.
Yes, it's completely normal. Your hair will only grow thicker, fuller and longer. Your armpit hair will come in soon. And as for your size, do you mean penis or height? Both will continue to grow as your human growth hormone doesn't slow down until around the age of 21, so you will get bigger, thicker and longer.
I mean penis size.
Don't worry your penis is not done growing yet.