Graduation Nude Dare Part 4

Beth was unbelievably at ease being naked in front of Keith. When we started swimming and playing in the water I would always be closer to Keith than Beth was. She was taking part in the horseplay in the lake but it was always me that was touching her and only me that she was touching. After about thirty minutes of that I saw the chance to get her more involved. I whispered my idea into Keith's ear while I tried to act like I was only sticking my tongue in his ear. I hugged Keith and went over to Beth and started splashing her and lightly pinching her nipples as we laughed and played. As this was going on she did not notice Keith walking up behind her. (the following was below water level but I knew what was going to happen) As I kept up keeping Beth occupied Keith walked up against her backside and pulled his erect cock upward against his stomach and put the bottom side of his cock against Beth's ass crack. He then wrapped both arms around her stomach and hugged her. The first instant she had this totally shocked look on her face. Keith then held her tightly enough to start leading her around as if they were doing a weird kind of dance. That went on for a couple of minutes until Keith stopped the moving around but was still hugging Beth around her waist. When they stopped moving I stopped picking at Beth and tried to start a conversation about something with her. As we started talking I noticed Keith had started slowly moving up and down sliding his cock in her ass crack. Beth did not miss a beat talking to me. She was acting as if Keith was nowhere around. So, with that, I included Keith in our conversation. All the while Keith continued to squat down lower on his downward dip of sliding his cock. A few minutes of that and he stopped moving. There was less than thirty seconds passed since he stopped moving and there was no mistaking that Beth was doing the squatting up and down every slowly so that she cold feel that hard cock in her ass crack. Keith had a giant smile on his face. I was not one bit jealous. I was thrilled to see Beth enjoying herself. Keith had hardly touched me and my teen hormones had my pussy aching from our playtime so far. As Beth continued doing the dip she had a grin on her face as if she had won the lottery. Once while there was a few seconds break in talking she looked at me and asked me "are you sure this is OK with you?" I cracked up laughing and said to her "hey, you go girl. I am perfectly fine with everything". About ten minutes of the dipping and Beth was tired (but horny teens recover strength quickly) ;-) Keith let go of her and I walked over to a more shallow spot again that the water level was about one inch below my lower crotch levels I told Keith that I needed him to come to where I was standing. . When he was beside of me I took a couple more steps toward the seawall to a point that the water level was barely knee deep. I reached out and grabbed his left hand, pulled him closer to me, and intentionally put his hand on my left breast. While doing that I asked him to stand behind me. As he was behind me I felt him put his cock against my ass crack as he had done with Beth. I told him to squat down a little and put his cock between my thighs. As he did this Beth was paying close attention to what we were doing. I had spread my legs apart and grabbed the end of his cock that was sticking out at least three inches past the front of my bush. I then pushed his cock between my pussy lips and began grinding my hips back and forth against his cock. Keith was quick to get in time with my movements and was moving his cock back and forth against my soaking wet pussy. He also now had his hands on both of my breasts and was rubbing my nipples. I was still pushing his cock as tightly against my pussy as possible. Beth could clearly see everything we were doing. I looked at her and laughed as I told her that this had her ass crack lap dance against Keith beat by a country mile. She laughed with me and said that I "obviously had a handle on the situation" to which I told her that I "had a hand on the perfect tool". We all three were laughing at my comment when a boat pulling a woman on a slalom ski came into the large cove our house was on. I am positive that as the two young guys and one young lady in the boat and the lady skiing all looked directly at us as they went by they thought we were actually fucking. The boat made two laps in the cove before moving back out into the channel. The last time they passed by us the guy driving blew his horn at us while giving a thumbs up sign. Come back soon for the fifth and final part of this story.