You look at all of the other suits and change your mind. It was Alex’s idea to try in the suits so you might as well let him have what he wants.
“Actually, let’s do your muscle suit. You be the legs,” you find yourself saying.
Alex grins. “You want to find out what it’s like, eh? Let’s put it on.”
You open up the muscle suit and then notice Alex starting to strip down. For a few seconds you stare at his bare chest before coming to again. “What are you doing?” you ask in surprise.
“I thought that the effects would work better if we were naked. You know, skin-to-skin contact. It is a magical suit after all.” You can’t argue with that, so you take off your clothes too.
After a few seconds of taking your clothes off, the two of you stand awkwardly there for a moment, completely in the nude, you holding the muscle suit in one hand. Alex rolls his hand impatiently. “Well, get in it!”
Opening the muscle suit, you stick your legs into the legs of the suit. Your head matches up perfectly with the large foam bulge in the front of the suit, where the groin would be if the suit was a real person. You crouch down, and Alex climbs onto your shoulders, sitting on them with his crotch pressed against the back of your head. Trying to balance, you reach down to grab the upper part of the suit and then pass it up to Alex, then standing up straight. Alex slips his own arms into the suit’s sleeves and then brings the suit around to close over his chest. He zips it up all the way to his neck, putting you in darkness. The suit has no hood or head part, so Alex’s head sticks out from the top. The suit feels form-fitting, clinging to the skin of both of you.
For a few seconds the two of you just stand there, two boys in a way-oversized muscle suit. “Nothings happening,” you whisper, just as—naturally—something starts to happen.
You feel yourself losing control of your arms and Alex feels himself losing control of his legs, but neither of you cry out. Your arms and his legs dissolve and start adding more mass to other parts of each of you. Your torso also starts to dissolve, feeding your legs and making them longer, stronger, and older, while Alex’s torso grows longer and broader and starts filling out with muscle. You notice that you can feel Alex’s body more and more as well, and you can feel the outside of the suit as if it’s your own skin. Then you feel yourself blasted with light. The suit IS your skin now.
Your legs and Alex’s torso begin to cover themselves in a thick coating of hair. You look up at Alex. His face is getting covered in a thick beard, and his chest has a dark brown carpet on it with a treasure trail leading down towards his groin. His arms are thickly haired and his armpits also have huge bushes sticking out.
Your face begins covering itself in thick hairs that felt like pubic hairs, while your lower jaw covers itself in the same, though much less thick. Then, you feel a very strange feeling—you feel Alex’s cock growing hard behind your head and not pushing against it, but pushing THROUGH it. Alex’s groin begins to merge with the back of your head as the head of his cock pushes out of your mouth. Your tongue merges with the cock to make it even longer before your head fully merges with Alex’s groin, and your lips merge into the skin of the now 12-inches-long cock to have it sticking out of the groin that your face has become. Your lower jaw swells up and becomes soft, filling with two large egg-shaped balls that you presume are new testicles, the size of oranges. Suddenly, your point of view shifts to the head of the cock, being able to see out of it even though it has no eyes.
Your cousin moans and reaches down to grab your shared cock as the changes end. Grabbing it with one huge hand, he begins jerking it back and forth until a torrent of cum emerges, soaking the far side of the room.