You carefully weigh your options... then impulsively pull down your pants and underpants, grab a different green condom that is notably longer than the one that Mark used (though not that different in girth), and pull it over your small, partially erect cock.
Then it strikes you what you are doing. The part of you that is Scott, Mark's younger brother, is trying to emul-- something-- EMULATE! your bigger brother!
But then again, you didn’t use the same condom, but a longer one.
It the Scott part of you finds the idea of putting something on YOUR dick that your brother just had on HIS own as disgusting as the opposite, making you choose the a similar one of the same color instead. At the same time, the choice of choosing a larger one instead of smaller one probably also had part from your new mind in wanting to be like your older sibling, but one upping him at the same time.
You feel confused for a moment. Hadn't you wanted to go back to being your old self? Maybe the condom would actually do so? Maybe it would just turn you into a different person? Wait, you chose the green color because your brother did the same! You really do love your older brother, and want to be like him, right?
But he isn't really-- WHOA!
The lube kicks in, and your partial erection goes rock hard, throbbing. You grab the loose fitting rubber, and start to masturbate, forgetting everything else for the moment. Man! This one's lube is even stronger stuff than the last one!
This time it seems only scant moments before you are ejaculating.
Blinking, you look around. Yes! It seems to have worked! You're definitely taller! Everything looks a lot lower than before.
You then turn to your brother... and you don’t see him... and then you look down to finally to see him, and not by a little, but A LOT. He also looks smaller in comparison to some the stuff in the room than he was just mere moments ago. What?!
"So that's what it looks like," your brother finally says, seemingly more to fill the silence than anything else.
Meanwhile you are looking at yourself. You are taller, far taller. The height difference between you before your new change and your brother after his has practically swapped, if not became more extreme in the opposite... in the opposite what? You try to remember... Direction?
Looking up at the ceiling, the distance between it and your face looked dangerously close, and you quickly covered it when lifting your arm up.
Then you look down at now at yourself.
You are really skinny, all fat gone, apparently into height, and only a little more muscle. Rail thin, twig like, is how you would describe your new self. But with how tall you became, you guessed that even with your very skinny look, you were wider than before if height wasn’t taken in consideration and weighed much more.
Then at the crotch area, the condom is now a perfect fit, the penis inside it looks long and competitively skinny but with little pubic hair on it. It still looked immature... Even with that though, it was still a a lot larger than it was normally, even when in comparison to your new height. Wait! Not normally! You had to remind yourself that you are not Scott, but your mind struggled to remember otherwise.
You realized are still a junior high kid, still Mark's younger brother. Still a fourteen year old, though an freakishly tall one with a fairly large, yet still immature, penis.
The reason Mark looks smaller than before next to the stuff in the room was because it’s still your room, which has changed to be better suited to your height!
“So I think we can guess that condoms of the same color give similar results” Mark broke the silence that returned. “For example, the green ones making the person taller while still staying the same individual”
“I am a tall freak! Is that even physically possible?” You asked, a bit scared.
“Well, I remember that your height was measured a nine feet when we visited the doctor a few days ago, so you are the tallest person to ever exist...” Your brother replied. “But I do remember you loving being tall like that, and not wanting to be any shorter” He added.
Suddenly, your fear has changed to pride as memories got into your mind. What were you thinking about? It’s awesome? Don’t you remember how much you loved to tease Mark after you passed him in height three years ago, and how you still love doing so? Don’t you still love how you dwarf everyone around you, even when it’s your brother who dwarfs everyone else?
You then realized that even though your old self would have probably hated being that tall (you weren’t even sure by now), your new self actually loved it.
“Actually, maybe being a giant freak isn’t that bad, shorty” you said to your older brother bending down to his eye level in a very emphasizing and teasing manner.
“Well, I may be shorter than you, but I’m still your older brother, and the tallest person you know” Mark replied. “In addition to the only one who can do THIS” He finished as he grabbed your head by surprise and rubbed it.
Then, you suddenly backed up. You didn’t know what to think. Don’t you want to return back to normal? But at the same time, you did enjoy being with your brother, and the memories of your old self. Did you really want to be a young teen that’s too tall to stand in most rooms (your memory told you the room’s ceiling is ten feet high), or did you want to return back to a life you don’t remember?
Once again, your thought process was interrupted by Mark
"You know, it’s nearing eight o’clock, maybe we should go to the park to meet your ‘secret admirer’ before it’s too late. Then again, maybe we have better choices than to follow up the note, like a person we can trust more? I don’t know it just sounds worrying to me...”
With that in mind, you consider what to do next.