s****r's Birthday Wishes - Sex Stories

s****r's Birthday Wishes

... b*****r mounted her as he usually did, he tried to push her shirt down to add extra barrier between his erection and his s****r's forbidden entrance. He heard her coo as his cock settled between her two cheeks, he throbbed in response. Going about his business, Rob cracked her back, moving his hands up and down her small frame while applying pressure. She wiggled her butt and flexed it. He was harder than usual, and she loved the feeling of him against her backside. As she wiggled, the shirt worked its way up from between them. Then, all that was left was his boxers, doing nothing to disguise how much they were both enjoying the decreasingly innocent interaction. Eventually he ran out of places to crack and it would have been time for him to lie back down. It would have been, but then Ashley did something Rob did not expect. Wordlessly, she reached her hand to the small of her back where his cock pressed boldly against her. Her fingers quickly found him over his thin boxers and encircled his pulsing member. He should have done something, He should have reached down and removed her hand. He should have told her to stop. All he did was look down in disbelief, her tiny hand beginning to caress the sides of his shaft. She turned her head sideways and pointed her green eyes in his direction. His eyes searched hers, but she simply closed them sl**pily and breathed as her fingers continued to tease his cock. Her butt rhythmically swayed about as she reached into his boxers and ...

... grasped his stiff rod in her hand. "Ashley..." was all her b*****r could manage. "Mmmmm," she moaned and then whispered, "Robbb..." He couldn't make out the look on her face. "Ashley...?" he said again, questioningly. "What Rob," she grabbed him firmly now, "Should I stop?" She kept jerking him though, and his breathing hastened with each back and forth movement of her hand upon him. It felt incredible, and neither of them was about to stop. She was so brazen, taking him aback before he could collect his wits. Knowing what her intentions had been from the start, Ashley felt precariously horny. She had already won; she could get her b*****r to do anything at this point and she could have walked away on top. But under him as she was, her hand wrapped about his big cock, she wanted more. All it would take was a slight shift and she could connect his tip to her aching folds. And she knew he was powerless to stop what she had begun; he showed no hesitation as he returned her calm thrusts backward. In fact, he was reacting so strongly to her advance that Ashley decided to take action before she spent him on her back -- a waste. "What if your little s****r wants your big cock in her Robby...?" she whispered to him and moaned as she turned into the bed, her voice was muffled by the sheets. The thought rattled him deep as her hand slid enticingly around his cock. Sure he'd imagined something like this going down in his daydreams, but here she was right underneath him now and it was all ...