Several readers pointed out, dad needs to get busy here, and teach his sons what it means to be a father and a leader. Indeed, a group of my friends and I were visiting over drinks and one guy made mention of his son's spontaneous boners, another said, "It's time for you to introduce his hand to his penis."
Spear suggested that if the father wasn't ready to explain things, the older brother introduce the younger one to this blog. Perhaps.
Here's more of the email:
"It's ok that we share a bedroom. He's seen me naked before maybe even seen me with a boner once or twice He knows why I left and came to live with our dad Still I'm a bit nervous about jackingoff with him in the room but I think at some point he'll catch me at it Ha! I'd love to catch him at it But do you think I could just be open or try to be slick about it?"
Well, this is further discussion and instruction with the three of you together. Masturbation, particularly at the age of you and your brother, not only helps you cope with the full, aching sensation in the balls, and the near-constant boners (more on that tomorrow), it's a way to prepare for partner sex.
If he hasn't done it already, your father should be buying you two some type of lube and providing you both with old hand towels for clean-up. If he's really brave - in that he understands this is your opportunity to learn how to control your ejaculations - he'd get you each a FleshJack.
But, regardless, there is no reason you should have to hide from your brother. No reason he should have to hide from you.
You may even end up as my brother and I did: jacking off together. Even stroking each other's cocks all the way to ejaculation.
This is also a means of learning. Learning to openly communicate with a partner; telling them what you like, what you want more of in the moment, when to slow down and back off, when you're ready to cum.