This happened last night at a concert. Girl next to me was getting into the music and dancing, swinging her arms around her hips. Not wild just grooving. Well she ended up a step closer than what I realized and her one arm came back and made contact with my caged junk. She quick turned to say sorry, as she realized where she hit me, then it started to dawn on her that it wasn't soft skin. She gave me a funny look and I just smiled at her. She went back to dancing, but giving extra space. Would've been nice if something happened, but she was there with a bf.