I have to admit that I get that tingly feeling when my wife is nude around other people and I don't mind other men looking. The closest I have ever come to getting an erection at a nude venue was the first time my wife went with me and I watched as she undid her sarong and slipped it off her shoulders, dropped it next to the chaise lounge, and stood there totally bare. I don;t know why I feel this way but certainly can't deny that I do.
Some of you have doubtless seen my wife's pics either in my profile or in other groups but I will post a couple here as well since that is what this group is about.
My wife doesn't go nude with others around but I've always loved for her to wear a nice suit and look great on the beach. Some of my more daring suit choices for her, including Skinz, Brigette and open-weave crochet have never seen sunlight, unfortunately. :-(