Not sure if this will go over well but one of my wildest things I have done didnt set out to be all that WILD. It was your normal sex on the beach during midnite. I (male) had my back to the beach and she was bent over. I was standing up , didnt want the sand all over me,lol. Well, I was so busy looking to the lt and the rt during the whole time I never looked forward. Now remember it was at night , very dark. Little moon light. I saw someone walking up the beach so I told her we will had to finish up real soon. Keeping a eye on the person gettin closer and closer I didnt want to lose track of him, by now I could tell it was a guy. He was headed right at us. If I could make him out to be a guy I know he could make us out to be screwing. Closer and closer he got. Hell he was right on top of us. I busted a nut she was loud and drunk. As he kept walking past me you could see his eyes. Then out of the blue. I heard clapping and shouts, looking forward for the first time I made out 5 couples. This was a show I didnt know I was in. This is also called dogging. A whole new world open up. PS. spell checker didnt work for me!
Intresting way of being introduced to dogging 
mmmm sounds erotic!!!
Well don't know if we were seen or not, but was at Niagara Falls when the moment hit and the only place we could find somewhat secluded was on the front lawn just below the terrace where the sidewalk led the masses to the Skylon observation tower. All they had to do is look down about 4 feet and there we were tucked in to the shrubs. Took a little longer because of having to keep an eye out for police but what a nut!