The afternoon sun was slowly setting on the horizon as Kelly and Rob walked along holding hands, nonchalantly making their way back to their hotel room. Strolling along in silence memories of Kelly's afternoon gangbang, with Collette, were still very much in the forefront of both their minds.
"What would you like to do tonight baby? It is our last night." Kelly asked finally breaking the silence between them.
Rob stopped and pursed his lips, thinking for a moment, before answering.
"Tonight, you're definitely mine. We spent our first night here together and I want us to spend some time tonight being together. Maybe having a romantic meal."
Kelly beamed at him with obvious delight "Oh baby really? That would be perfect. Thank you."
"Want to get a drink?" her son grinned back at her, delighted he had made his mother happy.
"Mmhhmm.... That would be nice."
Finding a beach bar, a little further along they decided to stop, Kelly seating herself at a table while Rob went to the counter to get two cold beers.
"How are you feeling mu.... Kell?" he enquired as he joined her with their drinks.
"You mean after this afternoon at the beach and taking on so many men?" Kelly took a long draught of her beer before answering his question.
"Mmhhmm..." her son affirmed doing likewise with his own drink.
"Just how many men did fuck me? I lost count." She asked coyly.
Rob shook his head "To be honest I've no idea but I reckon that you both took at least a dozen pricks in each of your pussies."
"Oh god really?" she giggled naughtily, "I feel like a complete slut for doing it but I absolutely loved it. I loved doing it for you and I loved being used by them."
"Are you sure? I mean you've done so much this week. I thought maybe you would end up hating me."
"No honey I would never hate you." Kelly smiled, "And yes I'm very sure. You've woken up a side of me that I didn't know existed. I want to carry on being your whore if you want me to."
Rob finished his beer, "You know I do. You're everything I could ever desire in a girlfriend."
His mother blushed and took a last mouthful from her bottle before the pair of them got up to finish their walk back to the hotel.
Strolling along hand-in-hand they didn't talk, spending the ten minutes or so thinking back over their experiences of the past few days.
"We need to put some of our stuff in the cases" Kelly suggested when they got back to their room, "We won't have a lot of time tomorrow morning."
"Agreed." Rob sighed looking around disconsolately at the clothes and others items he had left strewn about.
His mother laughed at his rather forlorn expression "It's not my fault you're such a messy bugger."
"I'm a teenager. It's my job." He grinned back at her as he started picking up his things.
"Don't forget to keep back whatever you want for tonight and the morning." She reminded him starting to pack.
For the next hour or so they concentrated on packing their things for the trip home, leaving out just the clothes and toiletries they needed for the evening and the journey home.
Finally, she took a moment to look around the room and, satisfied she had put everything she possibly could in her suitcase, Kelly peeled off her bikini.
"I'm going to take a shower honey." She informed him with a grin stepping completely nude, into the bathroom leaving her son to finish his tidying.
Turning on the water Kelly had just got in when an equally naked Rob joined her under the shower.
"Jesus Christ, someone's bloody horny.... again." Kelly sighed contentedly as her son pulled her back into his arms, his erect cock pressing between her firm buttocks.
Pushing her hair aside Rob nuzzled her neck, gently biting her ear lobes and making his mother shiver with delight as little ripples of arousal began to course through her well used body.
"Aren't you ever satisfied?" she giggled wriggling her backside against him and feeling his prick grow even harder in response.
"Not when you're around without your clothes on." He laughed and turned her around to face him.
Kelly gazed up at her son and slid her arms about his neck pulling his mouth down to hers. Their lips met and she closed her eyes as he immediately searched for her tongue with his own.
"Mmmmmmmmmmm!" she ran her fingers through his hair as they kissed, pressing her slender frame against his taller muscular body.
As their mouths met his hand slowly caressed up between them and cupped a breast, pinching and rolling her nipple and making her shudder as she moaned softly with pleasure.
"Oh Rob... ohhhhhhhhh!"
Teasing her for a moment he felt her teat firm into a hard nub before switching to her other soft mound and repeating his actions until he had her literally squirming against him, gasping with pleasure.
Stop.... teasing me... I.... I need you.... now." His mother whimpered softly gazing intently into his eyes.
Sliding his hand lower, his fingers tracing lightly across her belly, tickling her belly-button, then gently stroking her hairless mound before they eased between her thighs.
"Ahhhhhh!" she gasped with delight, her legs instantly parting giving him total access to her sex as she leaned back against him, his finger lightly running along the length of her slit.
Enjoying the feel of her slim frame pressed to him he continued to tease her, fanning the flames of her desire as he did so.
"Oh yes Rob.... Yes.... I love you." Kelly trembled, a mixture of her own juices and a variety of men's semen oozing out to lubricate her slit, as her son's digit finally probed between her outer lips and up into her stretched vagina.
Worming first one then a second finger knuckle deep into his mother's hot pussy Rob held her against him as she writhed and caught her breath, her pleasure growing with every second.
"Please Rob... please.... Don't tease me... I need you inside me." She begged softly as he finger fucked her.
Pulling his digits out of his mother's dripping slit Rob offered them to her to lick and stared down at her as she sensually ran her tongue along his sticky fingers.
Waiting until she had lapped them clean, he spun her around and pushed her forwards so he had her bent over at the waist, leaning against the wall, before nudging her feet apart.
"Oh god, fuck me baby." She sighed, barely having time to brace her hands against the tiles before her son drove his shaft all the way up into her cunt.
"Oh.... my.... god.... Yes...Yessssssssssssssss!" going up on to her toes Kelly groaned out loud as she was impaled on the throbbing 8" of Rob's hard meat.
Grasping his mother's hips firmly, he immediately began to fuck her. His shaft slamming up into her cunt while her puffy pink labia clung to his prick, cushioning every stroke he made and making it even more pleasurable for him.
The sex was rough and fast. Rob eager to re-claim his mother after watching her take part in the afternoon's gangbang and then getting fucked by Stefan. Kelly meanwhile needed to have her son inside her again after he had recently emptied his balls into Collette.
Pushing back onto his hard length Kelly moaned in ecstasy and urged her son to fuck her harder, desperate to take his seed in her.
"Fuck me baby... fuck me.... harder.... harder!" She whimpered, wriggling around on his hard dick.
"Oh.... shit... shit.... mum!" Rob groaned, re-doubling his thrusts and bodily lifting Kelly off of her feet every time he slammed his cock up into her juicy slit.
With her hair swaying around her face and her tits bouncing with the force of her son pounding into her, Kelly convulsed in ecstasy, the sensation of release rapidly growing inside her. Unable to hold back she could feel her vaginal muscles clenching tighter around his shaft as she went over the edge.
"Oh fuck... Rob... don't stop.... Don't fucking stop.... I'm gonna.... Cuuuummmmmmmmmmmmmmmmmmmm!" the last word came out as a shriek of sheer ecstasy as she climaxed on her son's rigid pole.
Pistoning his hard meat into his mother's pussy Rob fucked her through the tremors of her orgasm as he sought his own release.
"Oh mum... mum... I'm..." he grunted behind her.
Kelly jerked wildly, speared on his pulsing organ "Cum in me baby.... I want your seed in me."
"Aaaahhhhhh.... fuckkkkkkkkkkkkkkkk!" he buried his cock in her welcoming cunt and ejaculated, pumping his sperm deep into his mother's womb.
Gasping for breath he held Kelly against him, gently fondling her modest breasts, leaning against her as his prick slowly softened before slipping out of her gaping slit.
"You are something else mum." He told her, pulling her round to face him before kissing her.
She giggled, her arms about his neck again "Well I've certainly got something of yours.... it's running down my leg now."
They both laughed and then turned their attention to finish showering, Kelly making sure she soaped her son down before he did the same for her.
It was about a half hour later that Kelly, wrapped in just a towel, finished drying her hair and put down her hairdryer to begin putting on her make up. She wanted to look good for their last night on holiday especially as Rob had told her wanted her to just be with him for the evening.
Carefully putting on her false eyelashes she coated them with a thick layer of mascara to make them even darker and longer. Then satisfied with how they looked Kelly applied her eye liner and a deep burgundy eye shadow to emphasise her blue eyes.
A touch of pink lip gloss completed her appearance and, after making a final check in the mirror, she stood up and casually dropped her towel onto the bed.
"Fuck mum. Every time you do that you make me want to fuck you all over again." Rob grinned at her as he finished dressing.
Kelly giggled sexily as she slipped a lacey white thong up her legs "Well keep it in your trousers until later. We need to go and eat."
Taking a bag from the small wardrobe she extracted a scrap of turquoise and proceeded to put it on. The dress was basically just a tight strapless tube that clung to her body like a second skin. Without a bra it hugged her breasts, her nipples clearly obvious through the material, while the bottom ended just a couple of inches below her panties.
Rob stared at her "When did you get that?"
His mother smiled back at him, slipping on her white sandals with the 3" heels, "I saw it when we bought the swimming costume and slipped out to buy it the other day. Do you like it?"
