You smile, as you appreciate the attention the two men are giving you. The burly man fondling your balls is Billy. His friend who's finger is teasing your anus is Tom. They drive different rigs, but meet up to have sex together, and on occasion, enjoy a third, but don't take no for an answer. You reach down and pull your cock away from your body, "There you go Billy, milk away"
Billy eagerly swallows your latex cock, gagging a little as he deep throats your huge member. A quick touch on his head removes his gag reflex.
Tom chimes in, "Go Billy, way to inhale that thing" Tom is about your height, a little taller. His stocky, burly build and generous body hair make him seem like a bear.
You reach up and guide Tom's head around and give him a kiss on the lips. Tom presses harder and sticks his tongue into your mouth. You take this opportunity to change Tom a little, as all of his body hair except for the scalp of his head will fall out and stop growing. His skin will become smooth and supple, and his cock will become a copy of yours, while his balls will be nearly 4 inches across in a stretched ball sac, with a prostate that will be triple it's current size and very sensitive. You suckle on Tom's tongue, and feel it grow in length inside your mouth. You feel the tongue's shape change, to resemble a cut penis. His saliva starts to taste salty. Tom starts to work his tongue back and forth into your throat until you feel his tongue spasm and pump a few jets of cum into your mouth. You push Tom's head away from yours. His head looks better now, clean shaven and a cock tip poking out from his lips. Tom pulls it back inside and smiles.
You feel Tom's new cock is done as he positions his cock at your anus. You squeeze your butt cheeks, lubing yourself up, and wiggle your butt. Tom takes the hint and slides in slowly, and begins to slowly thrust his hips, grinding his huge balls into yours.
With Tom's thrusting, you erupt into Billy's mouth. Eagerly the man swallows everything and suckles for more. You imagine Billy's form to be a copy of Tom's with an exception. Billy's cock will be larger than Tom's, and will be built so that Tom's cock can slide inside, like an external vagina. You squeeze your ass muscles and change Tom's mouth cock to be stretchable so Billy's tongue cock can fit inside and absorb. These two were now made for each other. Tom's cock felt good in your ass, and as you felt his cock spasm, you felt his release deep into your bowels. You feel better, and think one more round. Tom begins to thrust again, still filling your belly.
You put your hands on Billy's head and have him stand up. You caress his baby smooth face and realize he needs a little more. You pull Billy's face to yours and give the man a kiss. This time you stick your tongue into Billy's mouth. You find the hole at the tip of Billy's tongue and push your now pussy tongue over Billy's. Billy's mind is awash in his new senses, as his tongue and cock are linked by orgasmic ability. You change Billy's body to be muscular, no body fat, and anything he consumes is only to keep his body nourished, no extras. He is to serve Tom, and only Tom. Billy is now submissive in sex. This way he does not pose a risk to others. Billy feels his tongue build to a slow orgasm with his tongue deep inside yours, and his tongue erupts, shooting jets of his seed into your milking tongue.
With Billy done, it was Tom's turn. Backing up, Tom steps back against the shower wall. His huge cock buried deep inside you. Tom would be Billy's master for sex. Tom would not bother anyone else, as only Billy could satisfy his new body. His tastes for sex had changed. The need for Tom's mouth cock to be filled was already growing. Tom erupted again in orgasm, and he stopped bucking his hips against yours. With both hands, you reached down to feel your belly stretch, as Tom filled you. Tom's body too became less fatty and more muscular. Tom and Billy would remember who they were before they met the stranger in the shower. They would be repulsed at their cock swallowing organs, but powerless to deny the pleasure they bring. Their bodies would only wear lycra or latex, and their cocks between their legs would always be erect, at one foot in length. Neither Tom or Billy could deny the other's pleasure, and the longer they went without sex, the stronger the urge would grow.
You step forward, and slide off Tom's cock. You turn Tom around, facing the wall, and reach over and pull Billy next to Tom. You have both face the shower wall. Their now well-honed butts make the next part easy. If they find other's willing to have sex, both Tom and Billy will be submissive. You position your cock at Tom's anus and slide in. After a few strokes, you feel Tom's body spasm as be bursts into orgasm with his very sensitive prostate. You keep pounding away until your orgasm builds and then release into his bowels your seed. You implant a strong desire for Tom to keep a vibrating sex egg inside his tongue when not in use by Billy. You smile approvingly in your preverse justice, and realize you have to save enough for Billy, so you stop after a while, and pull out. You have just made Tom's ass another way for him to feed. You take a moment for your cock to recharge and then do the same to Billy. After finishing your second orgam and emptying your gut into Billy, you take a moment and implant a strong desire for Billy to keep a vibrating dildo in his pussy-cock when not used by Tom. Smiling at the thought, you pull out satisfied.
You sternly state, "Ok you two, turn around." Both Tom and Billy turn to face you, as you continue "Now you both get out of here and practice what you have learned here today. Use your manners in having sex with others, let them be agressive to you. Tom, you take care of Billy now, you need each other." You point to the door, and both men walk out.
Now, time to pee and get that coffee that should be ready now.