It was nearly midnight when Rebecca, seated on her bed with her laptop, heard a soft knock on her door. “Come in!” she said.
The door creaked open, and Mark peeked his head in. The light from the hallway lit the otherwise dark room. “Hey, can we talk?” he whispered.
“Sure,” said Rebecca with a sullen expression. “Let me put some clothes on.”
Rebecca stood up from her bed revealing her nighttime outfit: a long pink t-shirt over a pair of polka dot panties. She went to her dresser and put on her pajama bottoms. She sat down on the side of the bed.
Mark entered, shut the door, and sat down beside her.
“Hey listen,” Mark said feebly. “I um…I feel really bad about everything. It wasn’t right of me to frame you with the cigarettes. I honestly didn’t think you were gonna get sent to the dean’s office. I thought you would just find them yourself and get all paranoid. It was just supposed to be a big joke.”
“Are you gonna give that same apology to other girls you set up?” Rebecca asked in a skeptical voice.
“Yah, I guess I should. And I’m also sorry that I lied to mom. I’ll tell her the truth, and I’ll probably get in a ton of trouble.”
Rebecca scoffed, “You’re gonna get grounded for a few weeks. I had to get my ass belted! Like usual you get off easy for the things you do, and I can’t sit down for a week. You’re lucky my mama came in when she did cause I really would have whipped your ass!”
“Well,” said Mark. “Do you still want to?” His smile took on a shy, boyish character.
Rebecca chuckled, “Of course, but now that’s not really an option is it, since mama’s home. I think I’ll just let Mrs. Fletcher take care of you and your nonsense,” she said.
Mark took a deep breath, and hesitated just for a moment before her spoke. “I’ll make you a deal,” he said.
He could see his sister’s eye-brows raise, her face blue from the laptop light.
“You don’t tell mom, or Mrs. Fletcher about what really happened. And I’ll go cut a switch. Mom’s fast asleep and snorin’ pretty loud. She won’t hear it.”
Rebecca’s sad expression began to melt into a smile as she contemplated Mark’s proposal. “Have you ever gotten the switch?” Rebecca asked.
“No, I haven’t. But I know it hurts like hell.”
“Well, it only works if it’s on your bare ass Mark. Are you man enough for that?”
“Yes ma’am, I am. It’s only fair considering you probably got the same right?”
Rebecca nodded solemnly.
Mark looked at her with intense curiosity. “How did she do it? Did she make you bend over? Or lie on the bed?”
“I had to bend over the bed…” she said. She saw Mark lick his lips, and contemplate his next question. “Wait, why are you so curious about the details?” she asked.
Mark stammered. “Um, I don’t know…I just thought I’d…”
Rebecca slid over closer to him. She glanced down at his shorts and could see that his manhood had swollen. His posture had stiffened, and he looked straight at her. She placed her arm around his shoulder, and leaned her head toward his ear.
“Would you like a full description?” she whispered, placing a hand on his bare thigh.
“Um…sure,” he replied softly.
“Well,” Rebecca began. “I did exactly as I was told. I wanted to run right out the door, but I knew that would only get me in even worse trouble. So I marched myself down the hallway with that belt in my hand, and when I finally got to her room I placed it on the bed. Then I sat and waited.”
Mark was looking down at her silky fingers as she massaged his thigh. A smile was beginning to form on his lips. She continued.
Then she came storming in, and she slammed the door behind her. She stood over me and glared at me. “Hand me the belt,” she said. So I did, and then she took it and folded it in half. She told me to bend over the bed, and pull down my jeans, and my underwear. I knew it was gonna be bad cause she hardly ever tells me to bare my butt. But when she does it’s cause she plans on teachin’ me a lesson I won’t forget.
I whined for a second, and said I was too old for that. And she said, “well if you did it to Mark then it’s only fair that I do it to you. Now do pull down your pants, and underwear, and bend over the bed or you’re gonna get it with the buckle instead.”
So I did it. I pulled down my jeans, and I bared my butt, then I bent over the bed with my knees on the floor cause mama and daddy’s bed is kinda low to the ground.
Mark had been listening patiently, and Rebecca could see that his erection and grown to full size. But he pretended to merely sympathize with her misfortune. “Oh,” he said turning his head and meeting her gaze. “I’m so sorry Rebecca. Did it hurt? How many did you get?”
Rebecca continued:
It hurt like hell! It always does. And it was extremely embarrassing to have to bare my bottom and bend over the bed like that. She probably gave me about 50, but she didn’t count them. I was just trying to hold still as best I could so I didn’t make it any worse on myself.
It probably only took about 10 licks before I was cryin’ like a baby, and yellin’ out how sorry I was. And you know what? I meant it. I deserved that whippin’. I always do. That belt is the reason I’m such a hard-working, and respectful person today. That’s why I think you need to experience the same treatment.
Finally, when it was all over she told me to pull my pants back up and sit on the bed. She said if I ever got caught doing anything like that again, I’d get it twice as bad, as long as I lived under her roof. I said, “Yes ma’am,” and then she gave me a box of tissues to dry my face. I stood up, and she hugged me and said that she loved me. Then she handed me the belt and told me to go put it back.
Mark’s face was now inches from his step-sister’s. He could feel her breath as she spoke, and her hand was now making affectionate circles on his thigh. “Mark you are such a disgusting pervert,” she said. “This is all turning you on, isn’t it?”
Mark nodded his head in silence.
“Ohhh yah?” she teased. “You like the thought of your step-sister getting spanked?”
He nodded again.
“I bet that’s the real reason you put those cigarettes in my locker…”
He nodded again, this time with a sheepish grin.
She inched her hand up his thigh. “Is that why I catch you spying on me in the shower sometimes?” Her voice was now breathy, and taunting.
Mark looked down and giggled softly. “You knew about that?”
“I did,” said Rebecca. “And I’ve peeped on you a few times myself. You really do make the cutest little faces when you jerk yourself off in the bathroom.”
Mark’s mouth opened wide. Rebecca couldn’t tell if his sudden expression was due to what she had just told him, or to the fact that she had just grabbed onto the conspicuous bulge in his green shorts — or perhaps both. She massaged it gently with her fingertips, and then she kissed him tenderly on his cheek.
“Do you think about me Mark, when you stroke it?”
Mark was panting now and had seemed to lose the ability to speak. He nodded emphatically.
“I thought so. You really are a bad boy, you know that?”
“Yes ma’am,” he whispered. She kissed his cheek again.
“You want me so bad don’t you? It must drive you crazy to have a pretty stepsister who’s your age, always prancin’ around in her nightgown, and her bathing suit. But you know you’d get kicked right out of the house — hell’, you’d be shunned and disowned if you ever made a move…”
Mark’s hands had been frozen at his sides, resting on the bed. Rebecca took his right hand and guided it to rest on her breast. He could feel that she wasn’t wearing a bra. Her breast was just as he had always imagined — a delicious mixture of firmness and fullness. Her nipple seemed to pierce right through her t-shirt. He couldn’t help himself any longer. He leaned forward and kissed her lips.
“Yes!” he said with ragged breath. She smiled and kissed him in return. “It can our dirty little secret…” she replied.
Mark seemed to suddenly lose his nerve. He began to kiss Rebecca passionately, His arms wrapped around her back in a thirsty embrace. She wrapped her arms around his neck and the two tumbled onto the bed. They rolled until Mark found himself on his back with his goddess of a step-sister straddled over his torso. She leaned down, turned his head, kissed his cheek, then whispered.
“If you let me get you back for the whippin’ I just got, and for the cigarette prank…then after that’s over, I’ll let you do what-eeeeeever… you… want to me.”
“Deal!” he said with an unrepressed smile.
Rebecca kissed him long, making liberal use of her warm, slippery tongue. She drew back and pointed firmly at the door. Her expression became stern.
“Good! Now go cut me a switch boy!”
A Tender Moon 
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