Without arguing with her, I brought the flat
edge of the ruler down on her clit.

Slap.

She yelped and her ass lifted off the table in
blissful agony.

"That's for teasing me while I was in class."

Slap.

"And that's for walking around with no
underwear." Her hips buckled again as I
slapped the ruler on her pussy. I could see
the red skin of her sex quivering. Her slick
wetness pooling on the exams I have yet to
grade.

"Please, stop, " she begged.

Something was wrong with me if I thought
seeing a woman beg for me to stop punishing her was a turn on. I knew she didn't actually want me to stop. She would have used our safe word.

Slap.

I continued to destroy her over and over with the ruler. I counted seven more times I whipped her ass as I held her legs down. She was at my mercy and my mercy was gone. My final blow was on her clit.

She screamed and writhed under me.

I threw the ruler onto the floor and without another word, lined up my cock to her entrance and thrust inside her aching sex. 

She gasped and came on the spot, her back
arched off the table. 

I rode out her orgasm, rubbing her clit as I pounded into her on my desk. The desk screeched on the floor with every assault.

I filled her all the way up with
my cock until she was begging for me to stop.

"Stop, stop, please!"  

I came when her nails dug into my back and
her pussy squeezed me, milking my cum.

I pulled out and shoved myself back into my
trousers.

We stared at each other in awe until she gathered herself.

"Same time tomorrow?" She asked before
pecking me on the lips. I nodded, speechless.
I watched as my wife of ten years walked
towards the door to my classroom, sending a sexy smile over her shoulder.