I agree with most of the guys so far. I know its awkward, but once you address the issue, you're done. Here are some other thoughts...
- If you don't like them looking, don't give them the opportunity. Go before you leave home. If you don't, you're a man. You can hold it for hours.
- It sounds as if their father isn't in the picture. If he's not, step up (if you'd like) to the responsibility of psuedo-mentor and address the issue when it happens. (as you're in the restroom) " boys, i know your father isnt' always around to ask questions, so if you've got anything to ask about guy things, don't hesitate. Sometimes your mom isn't the easiest to talk to and you'd just like it to be man to man, hit me with your best shot. No limits, boundaries, or judgements." That way, the door is open to them and they know it.
- Check with the mother and let her know (if you'd like) that you'd be available if necessary, if/when there are any "man" issues with her boys. After all, they're getting to that age where everything turns to sex. If she knows about it, she can tell you if she wants help. If not, you haven't made anyone embarassed or feel awkaward and she still knows you're there if needed.
- Another thought - You're a man. They are curious. Let them look. Sometimes if it's not one of those "forbidden" things, the curiosity goes away after they know about it. (NOT ALWAYS THE BEST OPTION, THOUGH) You don't want to be known as the weird uncle who lets it all hang out.
- Being in college, guys look. We all know that. Yay college community showers. Sooner or later they will see. You may even be so bold to take them to a gym or YMCA type of place and shower there in the community showers. Go camping with them. Being nude and having a penis is a fact of life.
I never had anyone to talk to, and i wish i did. I personally would rather be the uncle who felt awkward for a little bit but have the boys know you're there, than be just another guy in the crowd.
Good luck, my friend. Whatever you decide, I'm sure it will all work out. It always does. You'll make a wise decision.
You need to decide how much you'd like to be involved in their lives. It will be awkward. You're a man. You can handle it.