Swim over to them...

You start two swim up to them, wanting to give them a scare. Unfortunately, they all have their eyes closed and literally don’t see you until you’re standing right on top of them.

“Hey sis, you guys look like you’re having a nice time at the beach,” You say, standing directly at Rachel’s feet.

At the sound of your voice, everyone briefly freaks out. Your sister scrambles to cover herself up, the other two, who were lying on their stomachs, just screamed a bit and looked back at you. It only takes a second for Rachel to realize who it is though.

“Holy shit Dani, you scared the hell out of us. What are you doing here… and… why are you naked?” Rachel squints at you quizzically.

“Well sis, that’s a long story, and I’ll be happy to tell you all about it later, but suffice it to say, I was swimming up the beach to get away from some frat boys who were a little too happy to see me,” you half-explain.

“Oh, yeah, we saw a truck with a frat sticker on it when we came in and decided to come down to this little nook. Umm… why don’t you come lie down and dry off with us. This is Monica, and that’s Dave over there. Monica’s got a good sized towel, it’s a tight squeeze, but you could lie next to her, right Monica?” Rachel asks, but it’s not really a question.

“Of course! The lovely sister of a lovely friend is more than welcome to lie next to me.” Monica apparently doesn’t do coy.

Up close, you can see Monica’s face is really quite beautiful. She has severe blue eyes, surrounded by small features and nice skin, which makes her quite cute. You lie on your back next to Monica, who back on her stomach next to you. After a minute goes by, you hear her roll on to her side, and you can feel her eyes on you.

“Your sister has an magnificent body, Rachel,” you hear Monica say, but you keep your eyes closed.

“Yeah, she got the good genes, oh well,” responded Rachel.

“Oh, don’t be silly, girl, yours is just different, though extraordinary in its own way, and your sexiness, has little to do with your body,” retorted Monica, who was apparently quite frank.

Then you felt the touch of a finger just underneath your breast, and you tried not to squirm. The finger traced it’s way around your breast until it was back where it started, then moved down your torso, over your ribcage, until it ran along the ridge of your pelvic bone. As she leaned further to run her finger over your hips, you could feel her breast fall against your arm. She just kept going running her finger along your inner thigh to the soft spot where your legs intersect with your pelvis and then up to the patch of hair on your mound, tussling it slightly. The experience was certainly a turn on for your, but you felt awkward with your sister lying there right next to you and didn’t really want to do anything.

“Hey sis, you just got out of the water, you should put some more sunscreen on. Dave, give Monica the sunscreen.” Rachel commanded, and Dave threw it over to her.

You opened your eyes, and looked around for a second. Monica was lying on her side next to you, bottle in hand, her large breasts stacked one on top of the other. Rachel was also lying on her side facing you, with Dave behind her with one arm over her. Obviously, you were to be the entertainment. Monica squeezed a line of lotion down your chest, then started smearing around the lower half of the line.

You closed your eyes, just enjoying the feeling of being touched, and were really surprised, when you felt a small hand start moving lotion around your upper chest. Monica was working lotion in to your pelvis, hips and thighs, and Rachel was working lotion around your breasts.

Then, you were a little taken aback, when you felt something against your lips. However, you were turned on enough by the girls rubbing your down, that you opened your mouth to let whatever it was in. Dave let his penis slide in to your mouth, and you took it in as best you could, and licked all around it with your tongue.

Monica finally moved her hands down to your slit, where you are already soaking wet, and started all around, before settling her thumb on your clit, and letting two finger slide in to your cunt. With her two fingers, she started rubbing the top of your cavity, which was mind-blowing. Before long, your hips are gyrating, and you’re enthusiastically sucking Dave’s cock. You take one hand grab one of Monica’s breasts, and rest your hands against one of Rachel’s, gently rubbing her nipple with your palm.

After a few minutes, you were letting wave after wave of orgasms overcome you, and you were starting to get worn out. You opened your eyes, and grabbed Dave with your hands and pulled him down so that he was completely buried in your mouth, which meant that his testicles were resting your face, but you didn’t care at this point. Dave finally let himself cum, and the feeling of him shooting in to your mouth triggered a massive final orgasm in you.

The four of you collapse in to a pile of bodies, and after a while, you slip away and head back to your stuff to finish your nap.