Meanwhile, every night Jesse would try to relieve his horniness but the best orgasm he could muster was barely a dribble of thin, nearly clear, liquid. Even worse was walking in on Andy one nigh after hearing deep loud moans. When he walking into Andy's room he was hit by a wall of musky odor. Andy was lying on the bed completely naked vigorously rubbing his nine inch monster. He was already full erect and the organ looked as hard as a rock. As he approached his younger brother the musky smell grew much stronger and began to have an effect on Jake. Andy's new body, growing more and more like Jake's body used to be was now giving off powerful pheromones that used to make attracting sex partners so easy for Jake. Few were able to resist the powerful pheromones in the musk that Jake used to exude when he was sweating. But they were more powerful when Jake was sweating and fully aroused. With the changes to both their bodies, Jake was now becoming helpless to resist the musky smell that was coming off of Andy and filling the room. Jake went right up to Andy staring and the massive organ between this thick thighs and wondering just how hard Andy had been able to make his new cock. Jake's mind kept telling him he did not want to touch his brothers huge cock but he was now in a closed room with a sweaty and fully aroused Andy and was powerless to stop himself. Andy smiled when Jake reached over and put his smaller hand around his brother's cock. The first thing he noticed was that unlike his brother's hand, his hand was unable to wrap itself all the way around the massive organ. However he tightened his fist and squeezed it as hard has he could. A deep moan of sexual hunger came out of Andy but his cock was unyielding. It was hard as a rock and pointing up at a 45 degree angle. Jake could feel it start to throb and knew that it meant that Andy, unused to that level or testosterone flow his body could now easily sustain, was about to lose control. Before he could back away Jake felt Andy huge hand on the back of his head begin to exert pressure to push his face down toward the throbbing organ that was perfectly angled to enter his mouth. Jake tried to push back but with the application of his brother's other hand he was completely unable to stop him from using Jake's smaller and weaker body to sate his powerful sexual appetite. The oversized and hard tip of Andy's cock hit Jakes mouth hard and forced it open. As Andy effortlessly forced more and more of his cock down his brother's throat, Jake felt his lips stretched tighter and tighter as the thicker base of the cock came closer to his mouth. Jake tried with all his strength to push away from his brother but the meager muscles that he had left were no match for his younger brother massive body. Just as he thought his brother's titanic organ would rip his lips, he felt it pull out enough to relieve the pressure. Jake managed a deep breath before the cock slammed back into his mouth. Andy held his brother's head fully impaled on his organ with the head pushed through his throat and relished the sensation of his brother's throat spasm again and again around the very sensitive head of his cock. Jake looked up to see a faint smile on his bothers face and knew he was being turned on by Jake's helpless resistance to stop him from taking whatever pleasure his massive appetite for sex dictated. Andy started to use his cock like a pile driver pounding it down his brother's throat over and over again. Suddenly both brothers realized that as Andy's sex drive became far more powerful than he had ever experienced and he had lost total control of himself. It didn't take long before Andy felt himself approaching an orgasm that he could not stop. Using both hands he pulled Jake's head all the way down on his pole just as hot thick jizz came blasting out of the end of his organ. Andy pumped blast after blast of his thick load down his brother's throat. HIs grip loosened on this brother's head and Jake was able to pull away from his brother blasting his load down his throat, but his brother's massive organ continued spurt long streams of his seed right at Jakes face. When Andy's orgasm finally subsided, not only was Jakes abdomen distended from the amount of the thick jizz that had been blasted down his throat, but everything around them seem to be covered by puddles of the same sticky substance. As Jake looked around he realized that his own orgasm was just a small dribble compared to the tidal wave of seed that his brother had just unleashed.