Melissa was alone. Well, Ron was still there, but Sandi was gone. In the weeks that she had been there, Melissa had been her mentor, but they had also become friends. Melissa felt more lonely than she had before Sandi had come. Not because things were so different but because she had not known what it was like to have female company.
Sandi had been there three weeks altogether. When she left, she was confident in her ability to do the job and eager to prove she could. On her last day, waiting for Rick to arrive to get her, in fact, she walked over to Ron, put her hands on his chest, and then moved them down his stomach as she lowered herself to her knees, taking his shorts in her hands and pulling them down to reveal his magnificent cock. It was the biggest one she had encountered since she had been here, or anywhere really. Of course it was the biggest that Melissa had encountered in the months she had been here, too.
When Sandi had arrived at the Lagoon, she had tried to fellate Ron with humiliating results. Today, almost like a final exam, Sandi was determined to show that she had learned what Melissa had been teaching her. Melissa understood what she was doing and why, and watched, hoping she would do well. Sandi did not touch Ron's penis with her hands, but held his hips and reached out with her tongue to taste the tip of his rapidly growing penis. It bobbed a little, and she seemed to chase it around a little until she captured it with her lips and sucked on the head a little. Ron did not touch her, but placed his hands behind himself on the tops of his buttocks, thrusting his cock forward slightly as he did so.
Sandi, for her part, licked around the head and began to move her head forward to take more of him. She continued like this, sucking mostly on the head and stroking him with her lips, for some time, pausing to lick the underside of his penis from his balls to the head now and then. She would then return to her sucking, but each time, she went a little deeper. Soon, she had him pressed against the back of her mouth before she pulled back.
She continued like this for some time. Ron began to breathe more heavily. Then, when he was at the back of her mouth on one stroke, Sandi stayed there for a moment, and then pushed on so that he began to go into her throat. Melissa expected her to continue to stroke, adding more cock on each stroke, but Sandi just kept pressing. Her eyes were wide, something that happened whenever she was sucking cock, Melissa noted. But she kept on pushing her head towards Ron's belly, his cock going quite a ways down her throat, until she had him all the way in.
Melissa knew she could not breathe, but Sandi held Ron's cock all the way down for what seemed like a half minute before she began to pull back. She gasped for air, got a lung-full or two, and then made the journey towards his belly again. She did this over and over, holding him for a while before pulling back, but then began to make the trips without stopping. She went down and came back more and more rapidly, pulling back until only the head was in her mouth and pushing forward until the entire length was down her throat before pulling back again.
Sandi continued to plunge Ron down her throat like this until he began to groan, and then she picked up speed a little more. When he finally discharged he was deep in her throat, and instead of pulling back, she kept the length of him down and allowed him to cum deep in her throat. Melissa could see as she tried to swallow with the monster cock in her throat. She knew exactly what it was like to do what Sandi was doing, but again, she had never watched it. Watching it was a different experience and she was turned on tremendously. She was entranced, actually, and could not have looked away if she had tried.
Finally, Sandi pulled back. Her eyes were running tears, she was gasping for breath, and she was trying to swallow what remained in her mouth all at the same time. She was beaming, though. She had knocked it out of the park, and she knew it.
Ron spoke first. "You have learned much, grasshopper." He smiled.
Neither of the girls understood the reference, but both knew that Sandi had passed whatever test she had taken with flying colors. Melissa offered a hand, and when Sandi stood, she hugged her. Hugging Sandi's naked body did nothing to make Melissa any less aroused, but there was nothing for it at the moment.
When they left the kitchen, where all this had taken place, they walked back to Melissa's room together holding hands. Ron smiled as he watched them walk down the long hallway, asses making their mesmerizing motion all the way.
When they arrived, Sandi turned to Melissa and said "Thanks. I cannot imagine how I would have learned any of this without you. It scares me to think what would have happened if I had not learned it, too. You have been a life saver."
Melissa just hugged her again and did not say anything. She was anticipating Sandi's leaving, and was getting emotional about it. Sandi, however, pushed her back so that she sat on the bed, and then until she laid back on it. She pulled Melissa's legs up and put her feet up on the bed, spread her knees, and lowered her head to the very moist slit between her legs.
She did not say anything, but gently began to lick Melissa's nether lips lightly. Her touch was very light as it played over the wet folds, further arousing Melissa. Melissa was having a hard time not squirming, and wanted to take Sandi's head and press it to her, but she understood that this was a thank-you. And a good-bye. She let herself go and let Sandi control the experience. Which she did. Gradually, she increased the pressure of her caressing tongue, and then, for a brief moment, allowed her tongue to travel up enough to graze Melissa's clit.
It was as though there was an electrical shock, Melissa jumping as Sandi's tongue flicked at the little nub. Sandi returned to her lips, dipping her tongue in between them slightly, before again visiting her clit. Each time she did, she got the same reaction from Melissa, and Melissa's breath came more rapidly and her thrashing about became more pronounced. She could hardly lay still, but still she did not grasp Sandi's head. She did thrash the mattress some, and bucked a little while Sandi kept up her assault on her. Finally, Melissa felt her climax beginning to surface from somewhere deep in her belly, and when it arrived, she went rigid, began shaking, and screamed out "Oh, fuck! Oh, fuck!" over and over.
Sandi continued to press, not allowing her to come down. Melissa was quivering, shaking and gasping for breath. She finally had to hold Sandi's head to make her hold still, the sensory overload more than she could handle.
Sandi looked up from between Melissa's legs, her eyes bright, her face wet all over from Melissa's juices, smiling. She got up and sat on the bed right next to Melissa, looked down at her face and said "Thanks. Thanks for everything. Thanks." She stroked Melissa's face. Melissa reached for Sandi's thigh and lightly stroked it.
"Thank you. It has been wonderful your being here. I'm going to miss you."
Sandi leaned over and they hugged.
Just after that, they both heard the sound of the plane. It was distant, but it was coming. They continued to hug until they heard the plane arrive.
Sandi had just washed her face when Mr. Hartford walked in the room. He still looked serious, but seeing the two naked women did make him relax a little. Melissa just stood there, not saying anything, not even making eye contact, really. Sandi looked down as well, looking up for a moment to see what Mr. Hartford was going to say.
"Looks like you have gotten a nice tan, Sandi."
"Yessir."