Ignoring our presence (we were the only visitors there) he had his erect penis in the hand stroking it slowly. I touched my girlfriend's hand and with...a move of my eyes i noded her to look at him. Without a word she moved her head as a reply that indeed she had already seen him. Soon I noticed her breathing rythm accelerating, sign that she was already excited by the spectacle.We looked better. His penis was a middle sized one, just the size of his palm, and we could see the helmet round and. She wanted to feel the sun hit her skin as she jogged so on the spur of the moment, she removed her vest top followed by her sports bra. Then she pulled down her shorts followed by her knickers. As she pulled her briefs down, the sun's radiation hitting her naked vagina made her tingle. The only clothing she was now wearing out in the open space of the park were her trainers/jogging shoes & of course her wedding ring otherwise she was completely NAKED!The sun's rays & early morning breeze. Backing the trailer into the spot was proving particularly difficult and Jen was becoming impatient with my difficulty. All of the sudden a man approached the truck and asked if I need help, I was initially intimidated he was a muscular black man although I could only see his forearms I could tell from the veins and bulk he was well built his chiseled jaw and bald head reminded me of a fighter of some kind. I initially was hesitant but my Wife came up and thanked him and opened the truck door. Suddenly the door opened and a middle aged lady bade them enter; "Welcome; Nephew" was the first thing the woman said followed by, "Who do we have here then?" It suddenly hit Jemma that the reason he was so scared about people finding out was because this was his own aunt; Half of Jemma felt relieved and half felt scared; she felt relieved because if his aunt was into animals then it could not be seen as being so bad; but she felt scared because what sort of family shares these desires so.