"Oh, Fuck Yeah," cried John in his incredibly deep voice, flexing every obscene inhuman muscle. "Look at these huge arms." The giant jock held a crushing double bicep pose, and at thirty inches they were bigger than Dan's head. "Look at all this muscle. I'm the biggest fucking stud on the planet. My pecs could squeeze diamonds." He hit a huge most-muscular, exploding with size, and Billy wasn't sure he was lying.
"And just look at my fucking cock. I'm a big horny BEAST. And you guys thought you were big when you got transformed. I've got the fattest dick and always will."
"No shit. John your cock is so huge. It's big for a horse dick," said Dan, looking with pride and lust at the muscle giant that was his older brother.
"Not just a horse dick man. A fucking clydesdale cock. Probably even bigger. Yeah. I got a fucking ELEPHANT COCK." John smirked and flexed his massive manhood, waving it up and down provacatively. "So why don't you two little men get over here and feel my big strong muscles."
Their strong gay urges overpowered them and they approached John in awe. Billy began caressing his bulging right arm with one hand and his massive right pec with the other. Dan, still at 5'1", was at the perfect height to start massaging our giant brothers swollen member.
John moaned in an octave so low it vibrated the floor.
He flexed the bloated arm Billy held and pushed it in his face. "Is that fucking bicep big enough for you. Lick my huge arm." The shorter brother obeyed and it felt as though he were licking a hairy marble statue. "Grab my arm, try and squeeze it." Billy squeezed with both hands, doing nothing. Instead he used his brothers thick arm as a bar and pulled himself up, allowing John to fully support him with one arm. The sexy muscle brother barely felt it.
Suddenly Dan put his mouth to John's enormous shaft, impossibly swallowing nine inches and stroking the rest with both his strong hands. John closed his eyes and moaned loudly, still holding Billy with ease. "Oh, Fuck yeah. I'm so huge, and my dick is so big. Yeah. You can't even handle half my monster can you Dan? I'm just to fucking huge. Billy, get back to work. Its gonna take both of you to worship my fucking huge body."
Billy went around John, a lengthy journey, and pressed into his large rippling back, stretching one lanky arm around his side to grope a pec that felt like a steel plate. The other arm he reached out and slapped John's bulbous shoulder before feeling down to his bulky arm. Billy felt his long cock grinding against John's solid round buttocks.
John used a massive hand to push Dan further down on the elephantile shaft, amazingly managing to fit several more inches. Dan was pumping his own foot long dick furiously now, still standinga at waist height to his giant brother.
When John looked down over his huge shelf of pecs and saw his young musclebro jerking off he said, "That's a good idea." With that he grabbed one of Billy's hands and pulled his skinny brother around to his front with a fraction of his strength. John then grabbed hold of Billy's big dick, encompassing more than half of the 15 inch member, and began stroking. "Does that feel good man. Your cock may be big but it still feel small to me. Especially compared to my monster," the giant said, grabbing the base of his thick meat with his other paw. There was still plenty of shaft left between his hand and Dan's mouth.
"Oh fuck, John, you're so fucking big," Billy moaned. "Damn, you're huge. You're a fucking beast. Oh fuck." Billy shot a huge load, completely covering John's side and his hairy thigh. At the same time, Dan let loose with his muscle cock, shooting through John's titanic legs and covering the floor behind him.
"OH FUCK SO FUCKING HUGE." John let out a deep sexual roar that shook the entire house as his entire body flexed at once. Dan quickly released the firehose in his mouth in time to be completely dowsed with John's manjuice. Dan moved to the side and John continued cumming for three minutes.
After it was over Billy said "Hey, look at the screen."