My name is Pat and I have been with my wife, Kelly, for 4 years. We have an active sex life but sometimes I think she is bored with the missionary position we use to get her off (as she rubs her clit against my pelvis more to get off than from the penetration). I also suspect that she is less than satisfied with my 6 inch, but somewhat slim, penis.
To spice things up a bit, as we are both on the exhibitionist side, we decided to go to Desire resort in Mexico for a vacation. Desire is a lifestyle resort, so nudity and public displays of affection are welcome, especially at the large Jacuzzi and playroom off the disco.
We arrived a little buzzed from the flight in first class and immediately went to the pool and got a pool bed. Seeing everybody else naked, we quickly stripped and started to enjoy the sun. The couple in the chairs next to us struck up a conversation with us and it turns out I grew up next to the husband, Mark.
Mark's wife Shelly was wearing a bikini bottom and topless, with somewhat sagging features. I guessed them to be early 40's. Mark was wearing nothing except a straw cowboy hat and was sporting at least 7 inches, although not hard at all. He also had a very athletic look, almost like a swimmer.
I am 40 and Kelly is 36, and we are both in very good shape. Kelly is especially stunning, with brown hair and sexy brown eyes, and an athletic build from running and swimming. I could tell she was attracted to Mark right away, and he to her.
Shelly excused herself to rest before dinner and Mark told us what the typical night was like at Desire. This consisted of heading to the hot tub from 3-6 or so, then back to the room to relax/get ready for dinner, pre-dinner drink at the outdoor bar around 8:30, dinner at one of the great restaurants 9-10, back to the room to change for the disco, back to the bar for more drinks, then to the disco from 12-2am for more fun before either heading back to the bar, the room, or the hot tub again.
As Mark was now on his own, he suggested we head to the hot tub together, and Kelly agreed enthusiastically. I could tell Mark knew how into him Kelly was, and had a very cocky air about him. They walked together, naked, while I grabbed our stuff and followed them up the stairs to the hot tub.
Aside for a very large hot tub with swim up bar, there were large beach beds all around the hot tub. We grabbed one and Mark immediately jumped on it next to Kelly, while I tried to sit on the very small space on the other side of Kelly. She immediately asked if I could get us some drinks, and I left for the bar, with Mark telling me "I'll have a pina colada". He didn't really ask as much as treat me like a waiter.
When I returned with the drinks, Mark and Kelly looked very comfortable on the bed, lying right beside each other on their sides, facing each other. This at least gave me more room to lie on the bed next to Kelly, but left me to just hear their conversation versus being an active participant. Kelly then blurted out, "Honey, Mark's penis is soooo big, and it's not even hard yet. Can we see how big it gets hard?"
I assumed this meant that Mark would rub himself to get hard, and said I had no problem with it. I should have known otherwise, as Kelly loves to play with my cock and balls. As Mark lay back with his hands behind his head, Kelly leaned over and started caressing his penis, lovingly rubbing it while staring directly at it, mesmerized. It started to grow, and grow, and grow, until it was at least 11 inches. I was in shock, and the sight of Kelly playing with his cock had made my cock hard as well.