After a bit of thought, David realized that showing himself off to anyone would just be asking for them to try and steal his necklace from him. As delicious as the idea of lording even more size over his brother was, or showing off to one of the guys at practice, or hell even giving some poor girl the shock of her life, the thought of just enjoying himself for a while was becoming more and more prominent in his mind as he just let his hand idly trail over his body. He was sexy, cut, powerful, all of the things he had been before but... but more! And just thinking that in his hands was the power to just keep getting more and more cut, more and more powerful was intoxicating. He wouldn't have to work out anymore, wouldn't have to do anything.
David grunted as his hands moved down to his cock again, licking his lips as he just stared at himself in the mirror for a while longer, a big grin on his face as he just started to stroke himself off, enjoying the sight of that thick dick bouncing in his hands. He was always a big guy all around, dick included, but as he just felt across his massive member it was obvious now that it had grown larger compared to the rest of him, giving him an even more manly hung physique. David could only think of how big it could get if this kept up, if he kept using the necklace. Soon enough he'd be rivaling Fang in power, and able to shame most equines with his dick! He watched as his pre started to flow, dripping down onto his chest as he groaned loudly. Damn it felt even better than before! And was he imagining things, or was he getting even more, well, 'productive' as well?
After a few more moments of teasing, David just grabbed a hold of his shaft with both hands, relishing how even with both of them firmly wrapped around his dick there was still a bit of it poking out from under his finger tips. He started to just hump into his hands with reckless abandon after that. There was no point in edging himself after all, no point in taking it slow. After all, after he came, he knew he could just do it again... and again...
Just the thought of being able to cum for days was exciting David more than he ever thought it would. He was always a show off, but he never really put two and two together and really wondered why he always got so turned on by teasing people, dreaming of just getting bigger and better than his lanky brother or his powerhouse teammates. As he sat there, feeling his orgasm come closer and closer, it finally clicked: It was the power. It was that simple, and yet that complex. He worked out because he liked the feeling of his thick biceps just being thicker by the end of a hard week and the compliments that would net him from his teammates and chicks alike. He liked bragging about the girls he fucked to Tyler cause he loved the look on his brothers face, that annoyed jealousy right before he turned back to whatever he was doing, his face blush as secretly Tyler wanted to be more like his big 'bro'. And to think, all of that was child's play now that he had this new power. He had thought of outsizing Fang and showing off to girls, but why stop there? He could keep going forever. He could grow to the size of the freaking world if he wanted to!
David's daydreaming came to an abrupt end as he gasped, feeling his orgasm coming quick and hard as he just kept humping hard into his own hands. He grunted, thrusting up into his hands with short vicious strokes, each hard thrust feeling intoxicating against his pre-greased palms. He groaned one more time before just blowing up, ropes of cum flying against his own chest as he sighed heavily, shivering in ecstasy as he just leaned back, feeling his body start to tingle, a smile on his face as he knew what that meant...