Pool performance.

Stacy moves her leg between yours, pressing her thigh against your warm pussy. She leans in towards you and you feel the warmth of her belly, then her tits. She playfully traces your skin with her erect nipples. Your nipples make contact with hers, sending a shock of joy down your spine. From below you can feel Stacy begin to grind your pussy against her leg. You do the same with hers by gently raising and lowering your left leg. You both keep your movements to a minimum in order to keep balanced on the raft but quickly realize that the boat is steady enough for the exercise. "Let's see how far this ride goes..." Stacy murmurs out loud before giving you a kiss on the mouth. Your only response can be a flicker of the tongue into her mouth as you both concentrate on rubbing into each others bodies.

You gradually work your way to a full on fucking, both of you grinding your pussies in a rhythmic pattern. You're breathing harder now as you feel the impact of an orgasm coming closer. You lean in and give her another mouthful of your tongue. She leans in on you now, putting more weight on your body and your pussy. You kiss her neck and suck on her tits in appreciation. You know the wave will wash over you soon so you lean back and let it come, rubbing as fast and as hard as you can. It comes over you within seconds. You're amazed about how fast and strong it is. You feel Stacy shudder as she experiences something similar. Then, just as fast, it's over and you lay next to your friend, feeling the aftermath of sweat and water cool off in the open air.

CLAP CLAP CLAP

"Bravo! That was some fucking hot shit!" Lynn calls over from the other side of the raft. "I wish I had a camera! Haha!"

"Maybe next time!" you respond before going slightly red at realizing what you're implying.

"Ha! Next time I want to be the one getting fucked!" Lynn replies. "Watching you guys made me horny!"

This gives you an idea.