Buffy's Brother's Cock

Note: All the characters in this story are adults.

Buffy loved her twin brother's cock and balls. And seeing as how Biff loved showing off his prodigious endowment, it became her obsession. Whenever the two siblings were home from university and their parents were away, his barely concealed penis and testicles came out for display and play. The former long, thick, and veiny and the latter large, heavy, and full, they never failed to fascinate Buffy. But after a while, she began to envy her brother his magnificent male organs as she watched them, time and again, build up and pump out long spurts of pearly white semen.

At first, Buffy thought having a dildo of her own made from her brother's genitals would help. And if its making was any indicator, it should have, given Biff rose to the occasion by sporting a full erection and a tight scrotum long enough to create an extremely realistic mold. However, the resulting dildo, perfect down to the finest detail, made her even more envious in that she examined it endlessly. So, Buffy's obsession grew until the day she thought, "The shameless way Biff taunts me with his manhood, I deserve it more than he does!"

Fortunately, Buffy had several close friends at her university's bioengineering lab who she suspected could help her. After a tearful phone call with the closest, she was assured help would soon be on its way.

A few days later, Biff, sporting his big package, handed Buffy a small package containing the solution to her problem. Inside, she found a small vial--seemingly empty but for some gray powder--and a short, unsigned note printed on nondescript white paper. It said: "CAREFULLY empty the vial into the palm of your hand, touch it to 'him' for at least one minute, and then touch 'yourself' likewise. Next, wait and enjoy the results!"

Desperate and trusting, Buffy followed the note's instructions to the letter. Luckily, Biff afforded her multiple opportunities every day to jerk off his erect cock to an explosive orgasm, so step two was easily accomplished. Later, after rubbing herself into the blissful paroxysm of a full body orgasm while recalling her brother's engorged penis and copious ejaculation, she waited. But, to her profound disappointment, nothing happened!

Distraught, Buffy cried herself to sleep.

Then dreaming--or so she thought--Buffy found herself standing in front of the toilet with her brother's penis in her hand--but instead of it being attached to him, the wondrous organ was attached to her, its long, thick, and veiny shaft hanging from her crotch! Then feeling her pee hesitantly seep into and through its long urethra and drip out of its big slit, she found the confidence to bare down and let loose a forceful stream. Having held her brother's penis so many times the same way, she enjoyed feeling its heft in her hand and the piss flowing through and out of it. However, as the new sensations got the better of her, she lost control and her--yes, her!--cock grew longer, thicker, and veinier until it cut off her pee stream and rose up, bobbing along the way, until it stood proudly erect. Astonished yet again, she no longer imagined how it felt for her brother to get hard for her and show off.

But then, something else just as amazing happened. Upon feeling a sudden cramping sensation in her lower pelvis, Buffy again bore down and strained a few seconds until she felt a jolt of pain followed by a release of pressure. Looking down over her towering erection, she saw her labia, now fused into a scrotum, plump up as what appeared to be two large testicles dropped down and settled inside! "I've got my brother's balls too!" she exclaimed, reaching down to feel the selfsame firmness and fullness she had felt between his thighs.

The thought of showing off her prodigious endowment with its throbbing erection overwhelming and compelling Buffy, she exited the bathroom and walked naked down the hallway and into her twin brother's bedroom unannounced. Finding him asleep, facing away from her, and, as usual, naked underneath a thin blanket, she could not help herself and gave into the urge to masturbate. Disinhibited as she was by her newfound penis and marveling over how its taut skin with its bulging veins barely contained her arousal, she soon found herself gasping upon feeling yet another new sensation--this time, inside the swollen, purpled glans. However, the distraction turned into yet another pleasant surprise when the deep cleft of its long slit began leaking her first drop of clear, slick precum. Made newly aware of her big balls dangling and swaying below her thick shaft, Buffy focused on their heaviness and wondered if they were already making sperm--her brother's sperm?--something she had to find out without further delay!

Taking a hold of her achingly stiff cock, Buffy began stroking its full length--slowly at first and then faster and faster as the urge to milk it took control. Having eyes for nothing else, she watched her hand pump her marvelous appendage. But then, lost in her pleasure, she let loose a loud groan, causing her twin brother to moan in turn, turn over in bed, and open his eyes.

Caught out in the open and on the brink of her first ejaculation, Buffy, while continuing to stroke herself, said, "Hi, Biff! I've got a big cock like yours now--in fact, exactly like yours!

Blinking in disbelief, sleep-addled Biff looked at Buffy in shock, staring at the very familiar sight of his hard penis--but on his sister! Then, after a puzzled look followed by a panicked one, he, at first, hesitantly, but then suddenly, pulled back his blanket and, looking down at his nakedness, stared in shock a second time.

Looking on as she continued stroking her cock, Buffy followed her brother's line of sight to find his shaved groin both cockless and ball-less! The realization that she did not just possess a copy of Biff's manhood overwhelming her, she stepped up to the side of his bed just in time to let loose her first ejaculation, the forceful spurts of which glazed her twin brother's Ken-doll crotch with her own pearly white semen.