My mom had a way of looking at me that would speak volumes. Volumes.
She also restricted all children from "their" bedroom. He is violating your privacy. Deal with that aspect would be my suggestion.
It would of course be easiest to just keep the kids out of our room, but that's where the shower is. We have two bathrooms, but just the one shower.
Bonairos, you bring up a good point, but one that, at least as it pertains to his masturbating in our bedroom and bathroom, his dad should deal with.
I am finding this thread very helpful by the way. I know it seems that it should be fairly easy...I'm his mom, I should be able to talk to him, even reprimand him about anything...or Steve should.
But, again, our life isn't exactly "suburbia". Steve is gone most of the week, even though we talk on the phone. In a lot of practical ways, it's like I'm a single mother. But, while that's a little easier with my daughter, with my son, it's a challenge.
This thread has helped me figure out how I can very practically deal with my son on an issue as important of his adolescence. I'm finding that I can much more easily deal with the character building, spiritual truth examining aspect of his budding maturity...talking to him about the importance of respecting others as well as himself, helping him understand that what is going on in his body is a normal, healthy thing and is God's way of readying him for becoming a man. Helping him navigate how to approach girls at a dance, how to show respect to them and how important that respect is. "Theoretical" things, but important.
But, when it comes down to the physical side of things...things like when and when not to masturbate...those very sensitive talks are best between father and son. If I were a true single mother, if I were a widow, then I would have to do it. But, since I'm not, I find myself coming down strong on the side that those kinds of talks need to be with Steve.
Jeff, you said that your wife is reminding you that you need to have a talk with your son...if he's 12, he's a little older than my son...yep, that talk might be considered way "over due" if it hasn't happened yet.
And don't think you're going to get by with just one "talk"...gear up for a conversation that's going to be ongoing for the next few years. ;)