We are a very easy going and open family. Therefore we occasionally see
see each other naked in the bathroom. Neither my two sons both 16 nor my
daughter 17 have a problem with the situation as they grew up that way
and are used to seeing each other.

Recently we have a guest staying over with us. He is the 13 year old son
of my good friend who had to go abroad on business on short notice.

He quickly adapted to our way and had no problem with the bathroom
issue. The problem is or more like the question i have is that we have
all noticed that he has a very large penis. He is already better endowed
than my sons and i'm not sure they like or understand the situation.

Should i talk to them, should i also talk to my daughter? Or maybe have a
word with all of them, either in the group or separately. Or maybe not
mention anything? I am just slightly worried that our visiter will get
to feel he is unwelcome by my sons?

I'm not sure what the best will be. But as our visiter will be with us
for still quite a while i feel the urge to do or say something. But
there again i'm also not sure how and what to say

I hope maybe you can help and thank you for your time.