We packed our bags and walked over the first dune. Soon there were secluded areas with low trees and scrubs. Every so often we could hear people and s...umbled over men or couples taking in the sun in these hidden areas. We then turned round a bush to find a guy on his knees giving another guy a blow job. We stopped as my wife wanted to watch. It was clear that it would be over soon from the guys groans and then he groaned loudly and pushed his hips forward as his cum flowed into the guys mouth.. My cock fit perfectly into her open mouth and she continued moving forward until my entire cock head was in her mouth.I looked down and smiled at her, telling her she was doing a good job, but she needed to take my cock all the way in. I told her I wanted to feel the back of her throat, I wanted to hear her gag. I held her hair and she slowly started taking in more of my stiff cock in between her beautiful full lips until I heard her gag. That gave me a tingle in my nuts and I had to control. She said “I know this is not very comfortable for you, please bear with me, we are proceeding along nicely”. She pulled the gown off my left side, and up to my right arm. Except for the gown on my right arm I was totally nude, and my cock was beginning to feel excited, the mere thought of being nude in front of another woman was very exciting, no matter what she was doing. I was getting an erection. Not a full sized erection, but I could feel the tingle. She then said “I am going to be. Really fun! That sounded like it was good for you.” I grinned at her. “It’s probably a good thing that we got that out of your system now, ‘cause I think your mom might have been able to hear you from the garage, much less her room!”Her eyes were still closed, and she was still panting a bit. “Oh ... oh, my. That is so much better ... when someone else does it. Uh, what time is it?”I looked up at the clock and told her that it was almost 3:30.“If I’m going to return the favor, we might want to.