Steve watched over his mother as she came back to earth after the mind-blowing orgasm he had given her. He was proud and quite pleased that he had been able to give her such pleasure. But his work wasn't yet finished. And so, after a very brief respite – only long enough for her to regain her wind a bit – he smacked her on the hip.

"Roll over and get up on all fours!" he barked his command.

"Please, Steve, let me have a few minutes to rest... you really made me cum hard, baby!" she said weakly.

But Steve didn't want her to "rest" for fear that she might cool down too much and he'd have to heat her back up all over again, thus hampering and delaying him in accomplishing what he wanted to get done.

"I said get on your hands and knees slut! Now do it before I get really angry!" he snapped, giving her tit a stinging slap to emphasize his command. Erica was so shocked at his sudden behavior that she did as he said without thinking.

He moved up behind her, slapping her inner thigh. "Spread those legs wider. You are a slut – you should be used to that!" She spread her legs, still not sure of her son's new attitude.

She kind of liked this commanding presence... it reminded her a lot of his father when he was her Master. She didn't know where he picked this BDSM stuff up, but if this is what he wanted, she was only too happy to go along with it.

As a mother, she wanted him to be happy and self-confident... and as a submissive, she was thrilled to be under a dominant's command, even if it was her son who was the dominant!

Just then, she felt something under her rubbing against her sopping pussy. His cock!

"Steve honey, I... OH FUCK!" she gasped as he plunged fully into her wet, sloppy pussy in one slick thrust. He buried his entire cock, all seven and a half inches of it, into her until his hips slapped against her ass.

He grabbed her hips and began fucking her hard, fast, and fully without mercy. He was going to show her that she was being fucked by a man... by a Master... and not by some snot-nosed kid playing grownup!

Erica was beside herself. This was the first real living cock that had penetrated her neglected pussy in ages. She had been using her fingers, her toys, and on occasion, a handy cucumber for relief, but now – finally now – she had a cock inside her!

Sure, it was her stepson's cock, and by all rights, she should be appalled at the very thought of sex with him. But she wasn't. Maybe she would after her lustfog cleared, and maybe she would regret this whole encounter.

But right now, she was in such euphoria that none of that mattered to her. She was enjoying what he was doing to he and enjoying the pleasures she had been denied for way too long!

"Oh fuck, baby, your cock feels so good! Fuck me, please! Fuck me hard and deep, just like I like it!" she moaned.

"You like having my cock in your slutty pussy, do you? You like the way it feels when I fuck you like this?" he asked her in a deep low voice.

He called her a slut. Her son... calling her a slut. But he was right – she was a slut. And God forgive her, she wanted to be HIS slut. If he wanted to be her Master, then she would submit to him and see if they could work together.

He was new at being a Dominant and even though she had some experience as a submissive, that was limited too. So they would have to learn together. That in itself was attractive to her... learning and growing in this new relationship with her son as her new Master. 

"Oh please, Master! Please fuck me! Fuck me and make me your slut! I want to be your slut. I want to please and pleasure you! Please, Master, show me how to be a good slut for you! Please!" she said. She was sincere in her plea too. She knew the words to say – she had said them before both in her service to his father and in her webcamming. 

Her time with Jim was short-lived. They had only been together for four and a half years when he was killed in the accident. And her webcamming was just fantasy role-playing.

But this was real; Steve was really fucking her, it wasn't just her imagination and some words said to an unseen face at the other end of a computer connection. His cock was really thrusting deep into her long-vacant pussy and it felt incredible. Yes, her words were genuine, born out of lust and desire, not just because someone was paying a few dollars for her "dirty talk".

The effect of her words was not lost on Steve either. Hearing his mother beg him to fuck her and calling him Master sent a surge of power through him and spurred him to fuck her harder and faster. His confidence level was at record heights now and he was determined to claim this beautiful, sexy woman as his own.

He thrust into her as hard as he could, varying his speed to keep her off guard. Sometimes he would go slow and luxurious, letting her feel every bump and ridge of his hard cock. Other times he would employ a burst of speed that caused her to gasp and push back against him, grasping at the bedsheets.

"Oh, fuck! Oh, Master, please! Oh please, use me for your pleasure! Oh, God, your cock feels so good! I love the way you fuck me, Master! Please don't ever stop!" she moaned.

Steve wasn't ready to stop either. He continued pounding into her... he wanted her to cum once more but on his terms this time.

"Reach down between your legs and finger your dirty pussy while I fuck you. Finger your clit until you are ready to cum. But I want you to ask permission to cum. Don't cum until I give you permission, understand?" he said.

"Yes, Master." She did as he said and began rubbing her clit hard and fast, bringing herself ever closer to orgasm. Meanwhile, he shoved his thumb into her ass this time, using it as sort of a handhold while he began spanking her pale creamy ass. The combination of all these different sensations quickly overwhelmed her already tattered mind and she rose quickly to the point of near orgasm.

"Please, Master, please may I cum?" she asked.

"No, not yet, slut. Keep going," he said.

She whimpered a bit but kept going. A couple of minutes later she asked again.

"Please, Master, may I please cum? I really need to cum," she said more urgently.

"No, not yet. A little more," he said.

A groan and she kept on rubbing her clit while he kept pumping in and out and fingering her asshole.

Erica was desperate now. She hadn't had this kind of sex in a very long time and wasn't used to orgasm denial. She was about to burst whether she had permission or not, but she wanted to do well for him.

"Please, Master! Oh please, I REALLY need to cum... so bad! Please, please, may I cum? May I cum for you, please!" she implored him.

He smiled, feeling very proud of himself. His mother was calling him Master and he was winning her over with the way he was fucking her. This gave him an idea – it was time for him to cement himself as Master in her mind...  

Steve reached forward with his right hand and grabbed a huge handful of her long black hair and hauled her up on her knees. His left arm wrapped around her to grab her left tit and he sank his fingers deep in the immense globe. He pulled her back against him. 

"Having a good time, slut? You like the way I'm fucking you, don't you? You like having my hard cock shoved deep in that filthy fuckhole, don't you?" he growled in her ear.

"Oh God yes, Master! Oh, it feels sooo good! Please use me for your pleasure, please!"

"You're nothing but a dirty little slut, aren't you?"

"Yes, Master..."

"Say it. Tell me what you are."

"I'm a dirty slut, Master."

"Well, that was pathetic. Now tell me and make me believe it!" he said. To motivate her a little, he grabbed her hard stiff nipple and pinched it hard.

"Oh fuck! I'm a dirty slut, Master! A filthy, dirty slut! Please!" she said with a lot more urgency this time. He let go of her nipple grabbed her tit again. His right hand let go of her hair and instead grabbed her throat, holding her firmly, possessively as he continued his inquiry.

"Yeah, that's right... just a filthy little fucktoy, right? But who's little fucktoy are you?" he said. 

"Yours, Master. I am your slut, your fucktoy. Please, Master, make me yours. I want to serve only you. I am all yours – everything I am is yours. My ass, my pussy, my mouth, everything is yours. Please, Master, I will do anything you say, be anything you want me to be. Just please, please make me your slut, your whore. Please, Master! Please!" Erica said. 

She was nearly crying now; she so desperately wanted to be his. All of her defenses were down. Her morals her reservations all gone. She was begging, pleading for him to take control of her and claim her. 

This was the place he wanted to get to with her. This was the end zone and he'd just scored a touchdown and won the game. She was his.

"All right slut, you can cum. Cum for me NOW!" he barked.

Erica let loose and screamed out her orgasm. "OH FUCK, MAAASTERRR....!" Her body stiffened and shook like a willow tree in a tornado. If it hadn't been for Steve's arms around her, she surely would have fallen over and probably fallen out of the bed altogether.

But wrapped safely in his arms, she could let everything out; all the years of suffering of denial, of loneliness, went out with that one earth-shattering, mind-rending orgasm.

After emptying her soul out onto the bedsheets, she fell onto the bed on her back, panting and completely drained of every ounce of strength. She barely had enough left to open her eyes. 

When she did, she saw him hovering over her. She looked up into his eyes with nothing less than absolute love. "Yes, you are slut. You are mine. My property, my fucktoy, my submissive. I will be your Master, and I will teach you how I wish you to serve me, what I expect of you, and in return, I will take care of your needs. All of your needs. Understand?" he said.

"Yes, my Master," she beamed. Just saying that made her pussy gush. She was owned once again. Her heart soared. 

All this talk of Masters and sluts and serving had brought up the wonderful memories of when she was owned before. The joyous, delightful times she'd had with Jim – kneeling before him, serving him, being his girl. So many good times and yet such a very short time together. 

Now she was facing his son, a Master in the making, and she wanted once again to be owned, owned by him and learning to serve him even as he learned to control himself and lead her. It wouldn't be easy – normally, the Master is already well equipped and ready to take on a submissive before he starts looking for one. You don't go out and buy a fast sports car until you've learned to drive!

But this was not a normal situation – for either of them. They would learn together... on-the-job training as it were. There would be mistakes and missteps, to be sure, but they already loved each other as mother and son, so such mistakes would be overlooked for the greater enjoyment of them both.

He lay down on the bed and she cuddled up next to him, wrapped safe and warm in her new Master's arms. They lay like that, feeling close and together for a few minutes before she spoke again.

"Master, can I ask... how did you find my webcam? How did you learn that I was doing this?"

"Right before I was heading out the door to go to the lake, you got a phone call. You were in the bathroom and I thought it might be important, so I went to answer it.

But it went to voicemail before I could get to it. I went to your voicemail and found all those credits from PSC Services for 'Diane Darling' – which turned out to be your web name. Well, I looked it all up and there you were," he explained.

"Oh. Yeah, I guess I should have been better at hiding it!" she giggled.

"I don't want you to stop your webcamming. I want you to continue doing that, but don't be surprised if you get a new guy in your chatroom. I may pop in from time to time just to see what Diane Darling is up to!" he said.

"Oh, I hope so, Master... you know, Diane needs a firm hand – she gets in trouble when she's left alone for too long!" Erica giggled again.

"Now I have a question for you... what in the hell is an 'interactive vibrator' anyway?" he asked.
Erica propped herself up on one elbow. "You'll just have to tune in to my webcam and see for yourself, Master!" she smiled.

EPILOGUE:
After that first weekend as Master and submissive, Steve went back to the university. But he made sure to log into her webcam a few times a week to see "Diane Darling" and check on her.

When he did, he made sure to go into a private chat where she would give him a reason to come visit her – which he did every weekend. Fortunately for them both, his university was only a hundred and fifty miles from where they lived, so an hour and a half drive each way was not a problem. And his first class on Monday was an afternoon class!

Erica loved being his submissive and he loved being her Master. Both their greatest fantasies had come to life – in each other. And Steve finally learned what an "interactive vibrator" was!