"Would you sit on my face?"

"Um, Ms. Vierre? Would you please sit on my face?"

"Interesting choice. Why do you want that?"

"Well," Xavier said, "I've never done it before, and I'm not sure I'll be able to satisfy you."

Dr. Vierre leaned forward so that she could reach out and stroke his cheek. "Good boy." she cooed. "Some men don't know their own limitations. They feel sure they have the skill to please a woman, but only disappoint her. You're already better than them." A touch of pride lit up his face, and she smiled faintly. "Now, Xavier, lie back on the floor, and close your eyes while I take off my pants. Don't peek." She made sure the last instruction had a touch of sternness, and, as she watched his eyes carefully as she removed her pants and underwear, she was sure his eyelids didn't open even a crack.

She sat down next to him, and cupped his cheek with one hand and pet his hair with the other, leaning over him. He flinched a little at the unexpected touch, but still didn't open his eyes.

"Did you peek, boy?" she asked.

"No, Ms. Vierre." he said, his voice quavering slightly.

"Good boy. What a good boy you are." She leaned her head down further, until her lips touch his closed eye, and stayed there for a second before letting him go and swinging one knee to his other side. "Shhh." she said, as he opened his mouth to say something. "Open your eyes now, boy." He did, and saw her pussy staring back at him. He just stared for a while, so she said "Tell me that it's beautiful, boy."

"It's beautiful."

"Now, if at any point, you want to stop, for any reason, but can't talk because I'm using your mouth for something, you will snap. Understand, boy?"

"Yes."

"Now, do you want me to grind this perfect pussy into your face?"

"Yes please."

"Good boy." She sat down, making sure not to put too much weight on him, and weighted for a second. As expected, he stuck out his tongue, and pushed it into her. Once it was in, she started gently grinding her hips back and forth. After a few seconds, she lifted her hips up off of him, and then lowerd them again. She did this a few times, staying on him for a little longer each time, until she was sure he had understood how and when in the pattern of her movements he could breathe.

"Good boy, try to get that tongue nice and deep." she said, grinding her pussy harder against him. Every now and then, she would give him advice, like "Mind your teeth, boy." or "Slow down a little, boy." She also made sure to gasp and moan whenever he did something that felt particularly good. Normally she liked to be quiet during sex, but she was also training him, and she had to tell him when he was doing well.

Having her be on top was a good suggestion, she realized, because she was already seeing the shape of an orgasm in the distance. She heard a small noice from behind her, and glanced back to see Xavier's hands unzipping his pants and pulling out his penis.