When Rob eventually woke up the next morning, he was alone.
Wondering if he had dreamt the events of last night, he looked across to the other bed and was slightly alarmed to see that it was empty. Just as he was about to get up to investigate the bathroom door opened and his mother, still completely naked, walked back in.
"Finally, you're awake" she smiled and slid under the sheet next to him.
"Mum, what did we do last night?" he asked obviously still trying to come to terms with what had happened, "I... mean... we..."
Kelly cuddled up to him one hand sliding beneath the covers to take hold of his cock, lightly caressing it, "Well to put it quite bluntly, you fucked me. But before you say anything else you need to know that I wanted you to do it."
"Jesus Christ mum, that's..." Rob started to say before she kissed him on the lips, cutting him off mid-sentence.
"Wonderful, amazing and incredible." She told him, pulling her mouth away from his and giggling, her nimble fingers quickly stroking his shaft to its full tumescence.
"Oh shit.... mum... what are you..." he groaned feeling his prick rapidly responding to her touch.
Her mouth found his again, interrupting him, her tongue darting in to play against his in a long deep passionate kiss.
"Fuck me, Rob. Please. I need to feel you inside me again." She whispered as her lips pressed to her son's.
Unable to resist he rolled her onto her back and eased his 6' 2" bulk over her petite frame, looking into her deep blue eyes.
"Mum... I... we... we shouldn't..." he started to say.
Spreading her legs wide as he loomed over her Kelly reached down, her fingers guiding his cockhead to her slit, rubbing the bulbous tip between her slightly swollen labia.
"Put it in me. Please baby. Fuck me!" she gasped as the first couple of hard inches slipped into her tight entrance.
Knowing it was wrong but unable to stop himself Rob thrust in hard, burying the remainder of his rampant length in his mother's cunt in a single firm stroke.
"Oh fuck, mum!" he exhaled as he felt the soft velvet walls of her vagina close around his prick.
Beneath him Kelly squirmed as he speared her on his shaft, bucking her hips up off the bed to meet his long deep strokes every time he drove his cock into her with increasing vigour. Around his dick her soft plump labia clung to his girth, folding in and out as he fucked her hot pink slit.
"Oh god yes, yes... oh Rob fuck me, fuck meeeeeeee!" squealing with delight Kelly drew her knees back and pushed her thighs wide to give him complete unobstructed access to her sex.
The bed was soon creaking loudly again, its steady squeak matching Rob's easy rhythm as he worked his hard length into his mother again and again.
With her muscles clenching around his solid rod, he knew he wasn't going to last long but he tried to hold back wanting to bring her to a climax before he emptied himself into her.
"Fuck... aaahhh... oh fuck, fuck.... Mum... oh shit!" with a series of almost unintelligible gasps Rob's body spasmed and jerked as he pistoned his cock into his mother's pussy forcing it as deep as he could.
"Fuck me... don't stop please... fuck meeeeeeee!" moaning loudly she thrashed beneath him, her nails raking his shoulders as she clung to him.
Grunting with each stroke Rob slammed his erection into his mother's slim frame sending her closer and closer to the precipice, "Ungh... unhhh... aaahhh... unhhhhhhhhhh."
Writhing against his firm physique she flung her arms out wide, her fingers clutching the sheet tightly as she pressed her body against her son's, her spine arching upwards, the sensations growing rapidly in her belly.
"Yes, yes, yes... oh fuck.... yessssssssssssssssss!" shrieking in ecstasy Kelly came hard, her slender frame convulsing almost uncontrollably in the throes of her orgasm.
"Unghhhhhh... Uhhhhhhhh... Fuckkkkkkkk!" feeling her cum Rob lost control, his body tensing while his prick pulsed, spurting again and again, pumping another copious amount of his seed into his mother's belly.
Spent they clung to each other for a minute, Rob's weight pressing her into the mattress as they panted for breath.
Finally, still a little breathless, he rolled off his mother and collapsed next to her allowing her to cuddle up against him.
"You're something else mum." He told her, slipping his arm around her and pulling her close.
She stroked her fingers across his chest and looked up at him, "I've been thinking Rob. About us, here together."
"Oh. What about it?" his reply was apprehensive and succinct.
"Well, me being here with you instead of Henry has kind of ruined your holiday, hasn't it? At least as far as chasing girls goes." Kelly stated frankly, reminding him of what they both knew to be true.
"Ok yeah maybe a little bit but that doesn't really matter."
She pushed herself up onto her elbow to study him properly.
"So, what I'm suggesting is for the rest of our stay you stop calling me mum and call me Kelly instead."
Her son looked puzzled, "Why?"
"Because if you want, I'll be your porn star look-a-like girlfriend for the week." She giggled sexily.
"Fucking hell mum... I mean Kelly. Are you sure?" Rob sat up and looked straight at her.
His mother sat fully-up in the bed next to him, her breasts slightly flushed from their recent coupling, "Yes I'm sure baby. I'll do whatever you want me to do. Just like that Mandy what's her name you like. If that's what you want that is?"
"Seriously? You'd do anything?" he asked again.
Kelly grazed his mouth with hers her lips gently brushing his at first and then launched into a long deep tongue probing kiss.
"Absolutely anything for you." She whispered as they broke apart.
"So, if Mandy does it, you'd do it?" her son asked her pointedly.
"Yes, if she's done it, I'll do it for you."
"Even a..." he stopped obviously reluctant to say what was on his mind.
"Even a what?" his mother enquired smiling, curious about what was on his mind, "If you don't tell me I can't say."
Rob turned scarlet, "Err... I... umm... a."
"A what?"
He stared at the floor, his face crimson, "A gangbang!"