Apologies for the very long hiatus on this story, over a year from the last chapter. I've been too busy enjoying reading the great stories on the Literotica website! I'll try and get the fifth and final chapter completed soon.As it has been so long since the last chapter you might want to start reading the whole story again from the start.
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Andy knocked on the door to Jenny's house just as the sun was going down, its low rays falling over his shoulders onto the front door. The sun illuminated the interior of the hall as the door was slowly opened. Jenny's head popped around the edge of the door, her smilmg face welcoming him, but he couldn't work out why she was hiding herself behind the door. He stepped inside and turned around to face his former granny, now his lover. Jenny slammed the door shut with her backside assisted by her hands which stretched out behind her.
Andy could immediately see why she had acted so strangely, keeping out of sight of the neighbours yet not wanting to turn her back on him. Andy's mouth fell open, his jaw dropping. His cock was already springmg to attention in appreciation at what he saw and in anticipation of what was yet to surely come. Andy's smile broadened into a lusty grin and he let out his breath in a low whistle. "Wow." there was no other possible response to the sight he saw before him, "Wow, you look amazing. So raunchy. You're the slut of my dreams."
"I thought you'd like it, you naughty boy. That's why I saved it."
Andy became confused, he didn't understand what she meant or why she even had it.
For Jenny was wearing THAT dress.
That BLUE dress.
That SLUTTY blue dress.
His MOTHER'S slutty blue dress.
He couldn't believe it. How did she get it? Half of him couldn't even be bothered to work out how she had got it, for she looked so AMAZING to him. She looked as good as his mother had when she had worn it to show him why the women in the shop had called her a slut when she had tried it on before buying it. He had only seen his mother in it for a couple of minutes, but it gradually dawned on him that he would be seeing Jenny in it all evening, and his mind raced with thoughts of what he would do to her while she was wearing it. For he knew that whatever happened he didn't want her to take it off. He would fuck her while she was wearing it!
Jenny spoke softly, " Your mother sent around a bag of clothes for the church bazaar and when I rummaged through it I found this dress. I couldn't resist keeping it. I can't quite work out why she would have a dress this slutty, but it's just right for us. Do you like it? Am I slutty enough for you?"
Andy couldn't believe how sluttily stunning Jenny looked in the dress. It clung to her body like a second skin. It was a bit tight over her hips, but who cared, it did little to hide her curves. She wore silver high heeled strappy sandals which finished with a tight two inch wide cuff above the ankle. The heel was a narrow stiletto. Jenny had obviously been in training because she was now able to wear a four inch heel with ease. The effect of the shoes, making her walk on tiptoes, changed her balance and her backside stuck out beyond her straight back in an effort to maintain a safe centre of gravity.
But what Andy found the most enthralling was the way her breasts filled out the dress, stretching the shiny lycra material taught. The wonderful under-curve of those fantastic orbs was clearly delineated, and her boobs spilled over the top of the bodice constrained in places by the straps which ran up to the collar. The straps were clearly at full stretch trying to hold her tits in place. Most wonderful of all was that Jenny was not wearing a bra and her hardening nipples stretched the fabric still further, creating a little tent.
Andy having spent an age taking in all the wonderful things he saw was finally able to speak but was only able to repeat what he'd said earlier, "Wow, you look amazing! ..... You've turned into the slut I always wanted you to be."
Jenny giggled and whispered breathlessly "How slutty do you think I can be?! Do you want me to show you?"
"God, I wish you would." Andy replied, His tongue hanging out.
Jenny turned her back to Andy and walked across to the sofa, rolling her hips in an exaggerated sway. There she knelt on all fours on the sofa, wiggled her arse, turned her head towards him and suggested, "Well, come here and fuck me then!"
Andy immediately bent down to untie his shoelaces and kick off his shoes, then hurriedly unbuckling the belt of his trousers, unbuttoning and unzipping them in double quick time. In his haste to drop his trousers and pants and kick them away he almost fell over, but regained his balance by leaning on a cupboard. Andy almost sprinted across the room to his sexy Gran's delectable rear end, His cock rising to full stiffness as he went.
Crouching down on the sofa had caused the short dress, already straining to cover her thighs and arse, to ride up over her hips, exposing the tiny blue thong she was wearing to Andy's gaze. Not wishing to waste time, Andy pulled the narrow and flimsy material to one side revealing her swollen pussy lips. Bending at the knees sightly to match the height of his tool to her pussy,Andy aligned his cock and pushed forward so that the head slipped between Jenny's sopping wet lips.
Jenny giggled and waggled her arse again, encouraging him to push deeper. "Come on, big boy, fill me up!" she demanded.
Andy was more than happy to comply with that randy request, pushing forward slowly, then easing back a little, before rocking his hips forward to slide in deeper. Jenny was so wet and open that in a couple of strokes he was buried deep inside her. He continued with regular thrusts pulling out each time to the point at which only his helmet was in Jenny's pussy, enjoying the sensation as his cock cooled slightly with the evaporation of Jenny's juices. After a few more strokes the pressure in his cock began to build. He threw his head back, closed his eyes and increased the speed of his thrusts.
Jenny responded by pushing back against each of his thrusts until the end of his prick was tickling her cervix on each thrust. Jenny began to build towards her climax and started to moan and whimper as each thrust buried Andy deep inside her. Andy began to pant in short staccato breaths as his come built up the pressure in his cock, pushing its way to its ultimate release in Jenny's pussy.
As the pressure became unbearable Andy threw hs head back once more, let out a laboured cry and shot his load, spraying several jets of white hot jism into the heart of Jenny's womanhood. The sudden change of temperature, combined with the sensation of the spurts hammering into the soft folds of flesh around her cervix caused Jenny to boil over and she in turn came, her body racking with uncontrollable convulsions. Her muscles gave up their support to her body, and she collapsed in a heap on the sofa, Andy falling on top of her.