Details changed slightly, written with omniscient narrator POV. Hope you enjoy my re-telling as much as I enjoyed the actual encounter!
In her mind, nervousness mixed with excitement and self-consciousness as he poured the oil out on his hands. Her skin was already slick with previous applications, and while she liked the feeling of his large warm hands easily gliding across her, she still couldn't help but feel vulnerable. Perhaps even a little silly, especially in this position. She giggled as she thought about all the girls in the class doing "happy baby" next to her, and knew that the next time she did this in class, her mind would come back to this moment. Feet up in the air with hands grabbing toes, her naked torso slick with oil; Her vagina and, even more naughty, her ass on complete display for her man at the end of the bed. She still didn't feel comfortable in this position, but oh, the way he looked at her when she did it made her want to pull him in for a deep kiss.