Yu Ling learns discipline.

Yu Ling's forehead is covered with a light sheen of perspiration. She is trying hard not to breathe too hard, nor make any groans of pleasure. Her body is shivering slightly; it is easily mistaken as a reaction to the chilly room temperature and her skimpy clothes (spaghetti top with denim skirt that was way above her knees). As the lecturer drones on, and students are busy copying the sacred notes flashed on the wall, she is clamping her milky thighs hard and concentrating on being quiet.
He quickens the pace, she accommodates by matching his rhythm, pushing her butt backward and forward, increasing the intensity of his thrusts.

He thrusts harder and harder, faster and faster, when he finally gives the command for her to come, he tugs her nipple ring. She screams and bucks her hips, trembling all over. He forces himself not to come, controlling himself. He feels every bit of her orgasm; the hips against his body, the shivering, her pussy clutching hard on his pulsing cock, her pussy juices bathing his cock inside of her.

"I'm not done yet bitch."

Pulling his cock out of her pussy, it is soaked in her juices. His fingers start massaging her shameless clit as he licks her ass rim. He savors her feminine taste and scent. He licks around it, over it, up and down, left and right. She flexes her ass muscles in response to his arousing touch. Her orgasm is over, another one is starting.