When I was thirteen my best buddy was my neighbor, Rob. We spent a great deal of time together and, at that age, much of our interests involved girls, their bodies and the unknowns of sexuality. Rob, had an older sister, Jane, who was in high school and, to me, the epitome of a beautiful, desirable female. I accepted that, to her, I was just a kid but that did not deter me from being obsessed with her.

One late autumn afternoon, Rob and I were throwing a football around in their back yard. An errant throw from Rob, hit a tree branch and the ball bounced into their side yard. As I went to fetch the ball, I passed a brightly lit window well that I realized was the window to Jane’s basement bedroom. She lay on her bed, her pants at mid-thigh while her hand was busy with some activity in her crotch.

I had never seen a female’s bare genitalia and did not immediately recognize what she was doing. This was still before Playboy’s first foray into frontal nudity so while we had seen bare breasts and bottoms in magazines friends had shared from their dads or older brothers, we had no idea what a girl’s equipment looked like or how it really worked.

Rob came up behind me, saw what I was agog about and declared loudly, “How cow!” He knew exactly what Jane was doing and then it dawn on me that she was masturbating, a ‘mortal sin’ according to their mother. Jane heard Rob’s astonished utterance, looked-up and saw us. She quickly pulled up her pants and yelled, “Mom!” Before running out of her room.

Moments later, Rob’s mom called from the back door, “Rob! You and your friend get in here right now.” She was really angry accusing us of spying on Jane while she was dressing, that we were degenerate perverts, etc.

Rob tried to shift her ire, “But, mom, she was…”

She interrupted his plea, “But, nothing, young man. You boys should be punished for this behavior. Go get the brush.”

“But, mom! Please?” Rob tried to evade the threatened spanking.

“Get the brush now or it’s going to be even worse for you," she warned. He stomped out of the room. Jane looked satisfied that her brother would soon be paying a hefty price for invading her privacy. Rob returned and handed his mom her favorite tool for warming her childrens' bottoms. “Well, let’s get this done, mister,” she demanded. He approached her right side as she had pulled out a kitchen chair and sat down. He lowered his pants and underwear and draped himself over her lap. He was quite a sight, with his cold-weather coat on his top half and below the waist completely bare.

His mom began to paddle his bare butt with the brush and I was amazed at the ferocity and pace of her swats. Soon his bottom was bright red and he was wriggling in the obvious pain. Finally she freed him and he hopped about trying to rub out the sting. Jane looked quite content about the discomfort her brother was enduring. He mom looked to me and shocked me with her command, “Get over here. You just as guilty and deserving of a whoppin’ as Rob.”

I slowly approached her and quick as lightning she tugged down my pants and pulled me over her knee. The brush hurt worse than anything I had ever felt. Soon my ass felt like I had sat on a red-hot stove. Eventually, I was released and stumbled about with my pants and underwear bunched around my ankles. Jane looked even more smug and satisfied and also seemed to take joy in seeing my exposed genitals as payback for my watching her antics. “Both of you to your rooms,” their mom ordered her kids and then looked at me. “Get yourself home and know that if you ever act up again around here, that will seem like a mere warm-up.”

I covered-up and headed out the door. I paused when I heard loud voices from the window well and snuck back. It was even darker and I laid on the ground and looked over the lip of the opening. Below Jane’s mom was saying, “What those boys did was wrong but I know what you were doing that caught their eye.” Jane pleaded that she was simply changing clothes but her mom was not buying the fib. Like she had done with me, Jane’s mom suddenly yanked down her daughter’s pants and panties and I watched with great satisfaction as Jane’s bare bottom was thoroughly spanked leaving it moderately bruised. I realized how arousing this whole series of events had been and slowly backed away, then hurried home.

My own mom called when hearing me come inside, “Dinner’s almost ready.”

“I will be right down,” I replied, hurrying upstairs to my room and quickly committed a ‘mortal sin’ of my own.