This one is a continuation of My Little Boo. I suggest you read that story to understand the context of this one.
Moving in with David was the best thing to ever happen to Donna. She loved being alone with him each evening. She laughed when he said he loved having her at his beck and call. Silly boy, it was HE that was at HER beck and call. Donna was in a constant state of arousal when David was nearby.
She pressed against him at every opportunity. She stroked his face, arms, chest, and of course, his crotch whenever he was within reach. When they settled on the couch to watch TV she always wore a simple gown that clung to her firm breast and showed off her nipples. She never wore panties and always climbed onto his lap and squirmed about until she felt his erection.
As soon as she felt him get hard she would tug down his shorts and lift her gown so she could slide his dick into her wet pussy. Sometimes she faced him and bounced wildly on his dick, fucking him hard and fast. Sometimes she faced the TV and just squirmed around enough to keep him hard and inside her for an entire program.
David loved it when his little sister just sat on his hard dick and flexed her pelvic muscles to squeeze his dick. She could keep him hard for an hour, or more before wildly bouncing on him while he held her hips. His little Boo was not happy if they went to bed without a load of his cum inside of her.
David soon found he no longer needed an alarm clock to rouse him in the mornings, as every morning he would awake to find Donna sucking on his morning wood. Some days he would just lay back and let her work his dick until he erupted in her mouth, others he'd give her a slight nudge and she'd mount him and ride him hard and fast until he exploded in her sweet pussy.
It was a lazy Sunday morning when David awoke to find his insatiable little sister slowly grinding on his dick. She had both hands on her nipples, pulling and pinching them as she used her strong legs to rock back and forth on the dick inside her. David slowly brought his hands up to grasp her slender waist. He lifted and dropped her back down on his hard cock. He loved the way she squeezed him as her pussy almost sucked at his dick.
"My god, Boo, I just can't get enough of you. How do you do it? You fuck me once or twice every day and suck me off five or six times a week. I have never known a girl who wants sex as often as you do. You're incredible!"
"Oh, am I too much for my big brother? Does your little Boo wear you out? (She quit moving) Do you need a rest? Should I stop now?"
"God NO!" David pushed his hips up as he slammed her down onto his hard cock. Donna squealed and brought her hands down to brace herself on his chest
"That's it, fuck your little sister, Fuck me hard! Oh god, I love having you inside me."
David flipped her off and pulled her hips up as he pushed her shoulders down. He quickly rammed his dick back into her wet pussy and slammed against her firm ass.
He could hear Boo's muffled grunts as he banged into her. He gripped her hips and jackhammered into her fast and hard.
"Is this what you want, you little slut? Do you love having your bother fuck you like some whore. Do you want me to tear this little pussy up?"
Donna raised her head, "Yes, Baby, fuck me, make me your slut, use me like some whore. I'm yours, take me!"
David was caught up in the game, he reached up and grabbed a fist full of her hair and yanked it back as he fucked into her with all of his might.
Donna screeched, arched her back, and pushed against him as he slammed into her.
"Oh my god! Yes! Yes! Fuck me! Own me! Oh god! Oh god! Yeeeeeeeeeeessss!"
David slammed deeply into his little sister as she writhed on his dick. He pumped his seed into her sweet little pussy as she squeezed him. They collapsed onto the bed panting for breath.
After a few moments, Donna crawled onto his chest and kissed him deeply. "Wow Baby, where did that come from?"
David hugged her, "Was it too much, the dirty talk and stuff?"
"No, I like being your slut. I can be a whore for you too! David, I love you. I'm yours, use me in any way you want. You are my big brother, I trust you, and I will never say no to you."
"Boo, be careful what you promise, your brother can be quite the pervert, you know." David laughed and hugged her harder.
Donna slid off onto one elbow. "David, I'm not kidding. You can do anything you want to me. Tie me up, put a collar on me, spank me, make me suck you in public, anything, anytime, I'm yours to use in any way you wish."
David chuckled, "Well, I'm not sure I'd want to do all of that, but if there's anything you want to try, just tell me. Now, be a good girl and get cleaned up, we need to head to Mom's pretty soon."
David and Donna arrived at their mother's home and let themselves in. They called out for their Mother but got no response.
Donna said, "I'll check upstairs, you stick the beer in the fridge."
David nodded and went to the kitchen while Donna headed upstairs. He stuck the beer into the fridge and looked around. There was no evidence of any food preparation, which made him think maybe his Mother forgot they were coming over today.
Donna walked down to her Mom's room and looked in. Her Mother was lying on the bed, sound asleep. Donna slapped a hand across her mouth to cover her giggles. Her mom was asleep, but it was easy to see what she had been doing. Her shorts and panties hung around one ankle and a large vibrator was lying next to her thigh. Her tee shirt was pushed up over her boobs and she was not wearing a bra.
As Donna watched her mother softly snoring away, she realized she was seeing her Mother as a woman with sexual needs for the first time. Her father had left them five years earlier and to her knowledge, her Mother never dated. She decided to just go back downstairs and tell David they should leave.
As she backed out of the room, she ran into her brother. She spun around and saw her lover staring at their fully exposed Mother.
She whispered to him, "It's obvious she was masturbating, let's get out of here before she wakes up."
David's eyes were locked on his Mom's fury pussy. It was still red from the workout she'd given it before she drifted off. He knew he should look away, but he couldn't. His eyes moved up to take in her large boobs. There were red marks around her nipples and he quickly imagined her tugging and twisting those fat nipples. Donna pushed him.
"Uh, yeah, okay," he said as she pushed him through the door and pulled it nearly closed behind her.
"Oh my god, now you're perving on our Mother," Donna whispered loudly.
"Well, she was, I mean she had to have been fucking herself with that big dildo. ...Our Mom? I guess I never thought about her needing sex."
"She's human, she still has needs! Hell, until I got you, I was going through batteries like crazy."
"Yeah, yeah, I get it. So what do we do?"
Donna went to the back door, opened it, and then slammed it loudly and yelled, "HI MOM! WE'RE HERE!"
A few seconds passed and they heard a groggy voice call down, "I'll be down in a minute."
