There was a knock at Professor Smith's door. "Come in."

In stepped one of his favorite students, Rebecca. "Can I talk to you professor?  My grades aren't as good as I need them to be, and I was wondering what I could do to improve them."

She was wearing a white blouse and a short pleated plaid skirt and white socks; she looked gorgeous. "What did you have in mind?"

"How about something like this?" she said, bending over and giving him a flash of her panties. Rebecca had a thing for older men and definitely fancied submitting to the professor. He got up and locked the door. She could see the bulge forming in his trousers, and he could see her nipples pressing against her blouse; she obviously wasn't wearing a bra.

"You know this is entirely inappropriate, and I could get fired for it."

 "It'll be our little secret.  I've fantasized for ages about submitting to you, professor." 

His bulge grew. "First you must call me Peter. Would you mind slowly opening your blouse?” 

She did, revealing her fabulous breasts. He feasted his eyes on them and kissed her while gently fondling those lovely tits. He felt her nipples growing and bent down to kiss them. She gasped as he licked and sucked her sensitive nipples, and she felt a tingling in her pussy.

"I don't think you've been doing enough work on your papers Rebecca, so I think you need to be disciplined. I want you to come and drape yourself over my lap for a spanking."

Her heart skipped a beat as she'd dreamt about being spanked by her professor. Her short skirt rode up more as she lay down on him, her breasts pressing into him. He smacked her a few times over her skirt then she felt his hand caressing the back of her calves, then slowly traveling up her thigh, gently stroking. She was thrilled when his hand went under her skirt and squeezed her buttocks through her panties. She could feel his hard cock pressing into her tummy.

He flipped up her skirt to reveal the cutest little ass tightly clad in white silk panties. She moaned as he spanked her over her panties, occasionally feeling inside them.

"You are not to touch yourself without permission."

"Yes sir."

"Now, as I'm preparing you, you need to prepare me for what you're about to receive and show some initiative. She knew exactly what he meant and quickly removed his trousers and underpants. She was surprised at his large erection entirely caused by her. She held his cock in her hand and licked around the head before taking it into her soft warm mouth. He was in heaven as her mouth pumped up and down his shaft, her hand caressing his balls. He didn't want to cum then, so he stood her up and kissed her passionately, their tongues entwining before kissing behind her ear, her earlobes and her neck and breasts.

"Now Rebecca, I want you to go over to that large sofa and get on all fours with your ass in the air."

She willingly complied and felt him lift her skirt again. He spanked her through her panties some more. She shuddered in anticipation as his finger ran up and down her pussy through her soaking panties. She felt his hands on her waistband and moaned as he slowly peeled her panties down. She was fully exposed to him, and he saw the most beautiful pussy imaginable glistening with her juices. He spanked her naked bottom until it was quite pink.

He licked her outer lips then