"I-I guess... you like to show off your muscles, right?" Harry responded with a bit of uncertainty not wanting to disappoint his brother. For a moment, Matt's expression was one of slight confusion, but it quickly faded as he realized that Harry was playing along.
"Good guess, bro." Matt smirked, reaching for a large silicone fleshlight, hidden under the bed. "I've been using this baby to get a quick relief after a good workout. It feels just like the real thing, if you know what I mean." Matt smirks while gripping the fleshlight.
Harry couldn't help but be both curious and cautious as he watched the droplet of white substance drip down. "Is that... your....?" He asked, not knowing whether he wanted to hear a yes or a no.
Matt grinned. “Well, with a bro like you, we should start sharing, right? It's just to help lube it up for a better experience. Come on, show a bro how much you appreciate them training you.” Matt said, winked, and handed over the fleshlight to Harry.
Harry looked at the fleshlight in his hand. He knew what it was, as it's something pornstars use in porn films, but this was the first time he's holding one. It was slick and warm to the touch. He then remembered Matt's seed on the towel, the smell, the taste, the buzzing - and the changes it caused in him. Harry sets it down next to him before stammering, "Uh, bro... maybe some other time, I don't know..."
Matt's gaze lowered unbothered by his brother's response, his fingers gripping the waistband of Harry's shorts, moving in with a sly confidence. With a firm tug, they slid downward, exposing the evidence of his brother's burgeoning arousal. A gleam of mischief took root in his eyes, as he pulled the undergarments down as well, brushing against the lust-swollen length of Harry's cock in the process, revealing the forest that surrounded his meager staff.
"I knew it," Matt said, the devious grin on his face widening as he reached over for the fleshlight. Slick and glistening, the toy provided a testament to its recent use. Turning his gaze back to his eager sibling, he saw the confusion and curiosity etched on Harry's face, and his face gleamed with cockiness.
"I've been there before, and I got the solution for you," Matt suggested, his voice as casual as if he were offering a controller to a game. "You'll see for yourself. Feels just like one of them cheerleaders sucking your brains out." A sheepish grin crossed his face as Harry held the fleshlight in his hands. The smirk on Matt's lips morphed into a chuckle.
Before Harry knew what was happening, Matt's large hand wrapped around his base, causing him to shudder. Harry was frozen, his mind momentarily hijacked by the unexpectedness of the situation. He felt like a marionette, strings controlled by his brother, leaving him unable to resist the machinations at play, as Matt steered the pulsing erection towards the fleshlight.
Without warning, Matt shoved the toy onto the throbbing member, the tight, velvety interior swallowing it whole. Harry let out a primal groan, his body enveloped in raw pleasure as the fleshlight's warm walls gripped and massaged his dick. The intensity of the sensation, enhanced by the cum that coated the toy's interior, sent tingles racing through Harry's spine.
As the fleshlight's walls coated with Matt's cum slithered around his cock, his hips began to buck and thrust against it, driven by a primordial force that he couldn't resist. Harry's body, normally reserved and unresponsive in these situations, now rutted sporadically. The fleshlight's silicone walls providing an almost life-like response, seeming to suckle on the engorged member with a feverous appetite.
The rhythm of Harry's thrusts into the fleshlight accelerated, his body seemingly disobeying his conscious mind. The fleshlight's insides seemed to squeeze his length tighter and tighter, stirring something deep within Harry's body.
The fleshlight's relentless pulses, fueled by the intoxicating musk and the seed contained within, awoken a dormant beast within Harry. The silicone surrounding it vibrating, electrifying his shaft, now pulsing and throbbing with renewed zeal. In the throes of this uninhibited lust, Harry's body obeyed the hypnotic order of the fleshlight's pulses. The fleshlight's insides rolled and convulsed around Harry's hard member, gripping it in an erotic death-grip.
Harry's cock was now responding in a way it never did before. It twitched, leaking precum to lubricate the fleshlight's walls, a signal of surrender to this newfound lust. The grip around his cock did not falter, squeezing with the deftness of an experienced lover, urging Harry toward his climax.
The head of his cock, once small and unimpressive, now swelled to a prominent size, the glans engorging with blood that pulsed with each throb of Harry's dick. The shaft itself, once a modest length, lengthened, pushing out of the fleshlight longer and faster until it was just almost like Matt's, echoing the sheer size of his step-brother's impressive stature.
Matt's spent cum that was coating the fleshlight's interior, continued to have a profound effect on Harry's body. Blasting signals to his testicles, causing them to expand, filling with copious amounts of Harry's own cum, the semen swelling within, ready to burst forth.
Harry's thrusts became more frenzied and erratic, the fleshlight's grip on his enlarged member unrelenting, squeezing, rolling, and pulsating. Harry's moans of pleasure continued to fill the room, the crescendo of the experience reaching its pinnacle. His cock throbbed with intensity. He could feel his seed churning, chugging in his balls, ready to erupt.
"Cum, bro, CUM!" Matt's voice rang out in his ear, his tone gruff and commanding. Harry obeying the order, thrusted into the fleshlight a final time. And, as if on cue, a powerful explosion of lust gripped his loins.
"I'm... I'm... Cumming! Oh God..." Harry yelled, his voice cracking with passion, his hips bucked uncontrollably as if possessed.
The eruption of cum burst forth, a strong, hot jet of seed coating the interior, mingling with Matt's cum. Harry's climax was intense, the experience mind-melting, and dribbles of masculinity started to seep out.
As Harry's final spasms of orgasm subsided, he let out a deep, breathy sigh. His face was flushed, and he could feel the sheen of sweat on his forehead. Matt's voice broke the silence, his tone laced with victory and pride. "That's my bro, Harry. I knew you could do it. And look, you've got quite a jack hammer now bud."
Matt unveiled the fleshlight from Harry's still semi-erect member, exposing the new length and girth that stood proudly. Harry looked down at his lower half, bewildered by the sudden transformation of his manhood.
His cock, once a modest, slender member, was now a thick, throbbing sex machine. The shaft was now a lewd, veiny behemoth that looked far more in line with a hardened, muscular man than the timid soul that Harry was. The head swollen, an unmistakable crown atop his shaft.
"Bro... this isn't mine... right?" Harry stammered, his voice shaking with a mixture of apprehension and a hint of fascination. His disbelief and shock were clear in his tone. "I... I don't understand..."
"Don't worry, bro, this is all part of the ride," Matt said, his voice confident, trying to reassure Harry. His eyes glistened with excitement and Matt's pride in what he had wrought was evident. "You're growing up, Harry. Changing. And that cock... Well, you'll be pounding some cheerleader's tight holes before you know it. Trust me, you'll love it.".
As he spoke, Matt's cocky grin turned into a wink. "Look, you might not notice, but we're almost evening out in size, bro," he added, grinning while comparing their dick sizes. "And that's just the beginning." Harry's mind slowly came to terms with the newfound changes to his groin. His body, still lean, was sweating fiercely and a scent of musk, sweat, and sex lingered in the room, prompting Harry to inhale deeply, unable to help himself.
Matt's eyes shone with pride and satisfaction in the changes he'd brought, evidently thrilled at the prospect of a future gym bro. "Now, we better hit the showers together before Dad comes here and finds out why we're sweating all over the place, huh, bro?" Matt asked, his voice playful and joking, trying to lighten the mood as he reached out his hand towards Harry. Harry stares at the hand, wondering whether to accept....