My thanks to Todger65 for his helpful edits.
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The precise click of Kate's heels resonated in the hallway while she went about her work. She tidied up paper work and closed out an old file. Friday afternoons were usually slow. Kate had no appointments, her case workers were already gone for the weekend, and the receptionist was happy to go home early. Running her own family-counseling practice had its rewards. Ownership also had its demands, so Kate stayed and worked.
Kate's efforts were all a sham, really. She was distracted. Kate hardly had her mind on what she was doing but she worked as if some imaginary supervisor watched.
A week had passed since her lover asked what she wanted for her birthday. She laughed and told him, "Find me and take me. Don't tell me when you're going to do it, or where. Surprise me." She didn't know if he took her seriously or not, but still she tingled with anticipation all that day. Kate tried to concentrate, but her fertile imagination interfered. She found herself preoccupied. Where would he find her? At lunch? On the stairs?
She stopped at the copier and set the file in front of her, then noticed a single, impudent gray hair that perched on her eyebrow and trailed across her vision. She smoothed her professional-looking suit then reached to pluck the bothersome strand.
He chose that precise moment to wrap a muscular arm around her waist. In the same motion he slipped a black bag over her head. Kate screamed and struggled, but even if she were a much bigger woman she couldn't have broken free—his arms were like tree limbs. Kate's sudden blindness made it all confusing. It would have been nightmarish if it weren't exactly what she asked for.
His hand clamped over her mouth and he lifted her feet off the ground—those things she could tell. She knew when he pulled her out the back door because she could feel the rush of summer heat but she didn't know where he was taking her.
A car door opened and his weight pressed her into the corner of the seat. The door closed behind them again and cut off the distant sounds from the street. Even blinded she knew that his body loomed over her. She struggled to pull the bag away from her mouth and to protest but he smothered her voice with a rough kiss. There seemed to be nothing that Kate could do to stop him.
He kissed her ear then forced his mouth under her chin to bite her throat. He pulled her suit jacket off her shoulders and used it to pin her arms to her side. His powerful hands worked to open her blouse and to expose one breast. He lifted her to his mouth with an arm thrust between her legs. He sucked her nipple and dragged it between his teeth.
Kate's fingers clawed at his broad back while he pushed his hand into her pantyhose and into her panties, and then pushed her legs apart. She knew that he would find her already wet, there was nothing she could do about that. Her excitement was undeniable.
His rough fingers caressed her and when he parted her pussy lips they dripped warm nectar. He thrust his fingers into her, ground the heel of his rough hand against her, and she gasped for breath. His touch was relentless and demanding. He coaxed her to climax then she clenched her teeth and groaned through a breathless orgasm.
Kate fell into relaxed confusion. She couldn't tell at first what he meant to do to her. He lifted her and turned her and she found herself on her knees. He bent over her with his forearm on the back of the seat. Kate buried her face against his bicep and panted. His intentions became clear when he pushed her skirt up and tugged her panties and nylons down around her thighs.
His lust was obvious in the hot breath on her neck and in the way he wrapped her body in his. His penetration took her by surprise, but only because it came so soon. One moment she felt the fat head of his cock searching her and in the next moment he filled her.
His thrusts forced Kate's breath out of her. She threw her head back against his heaving chest and reached between her legs. Kate touched the shaft that plunged into her, and then touched her firm button.
The tension that built in Kate's body was driven by his thrusts and by her searching fingers. She turned her head to kiss his skin and when her orgasm overwhelmed her she sunk her teeth into his arm. He roared, but she couldn't tell whether he bellowed from pain or from pleasure.
Kate's lover clutched her body against him and gasped with his lips beside her ear "God Mom! You drive me crazy!" Toby pushed his mother hard against the back of the seat and his essence erupted inside her.
Toby relaxed back onto the car seat then slipped the bag off Kate's head. Three years had passed since Kate's red-haired bull of a son first seduced her. He was even bigger now than he was then, with rough hands and biceps that she couldn't wrap with both of her hands. His chest had grown broad and thick. Kate made herself easy for Toby after that first time; it was always good for her and when they played games it was even better.
Kate laid her head against Toby's chest to catch her breath then turned his wrist to read his watch. She was going to be late for her own birthday party, but at 42 she didn't understand why her sister even bothered with the party anymore. Besides, she already had the only gift that really interested her.
Kate squirmed and pulled her skirt a little higher so that her son's cream wouldn't wet the fabric as it seeped back out of her. Her panties and pantyhose bound her at mid-thigh, so she stopped to adjust them before she rested on his chest again.
Toby sniffed at his fingers and found his mother's scent still clinging there. He tucked a few stray locks of Kate's hair back in place and moved his hand down her shoulder, her arm, her breast. "Happy birthday." he said. "Was that what you wanted?"
"Exactly," Kate answered, and smiled at her son. She looked at his arm and went on, "I bit you pretty hard." She rubbed the mark to see if it would fade away, then shrugged. "You may need to change into long sleeves."
Kate let her fingers trail up from Toby's bare thighs, to his balls and around his cock, then looked up to smile at her son. He started to harden again, just like she knew he would.
"Suck me." Toby told her, and touched his fingertips to his mother's lips. Kate slipped off the car seat and knelt between her son's knees. His cock stood up for her, beautifully erect. She sniffed at the scent of her own juices mixed with his essence, then slipped her tongue around the flared head of his shaft to taste him. He had a powerful cock. It was straight, thick and veined, and it seemed to pulse in her hand.
Kate took the head of Toby's cock in her mouth and let it slip over her tongue then she caressed its smooth curves and explored its creases. She sucked her son and drew him through her lips while she tumbled his balls in her fingers.
Toby laid his head back on the seat and moaned. He rested his hand on the back of Kate's neck and brushed hair back from her face to watch his now glistening shaft slide between his mother's lips. His pure pleasure urged Kate on.