Yes, with a special ring gag

Adam picked up his last gift from Max. It was a ring gag, but a bit different. The ring was made of steel and quite wide as to fit a real mans cock. It then had straps going back around the wearers head. That was the standard. What was special was the leather panel covering it. It had a simple plug so that if one didn't want to fuck the wearers mouth you could just plug the mouth shut. The inside of the plug was fitted with a inflatable rubber dildo that could be enlarged enough to go down the wearers throat by a few inches.

He hid it behind his back and twisted Robert around on the ground. "Ow, that hurt my dick Adam!"
"What a shame." Adam said and then yanked Roberts head up by his hair. Robert cried out in pain and the horror as Adam quickly pushed the steel ring in between his teeth. Working quickly, Adam pushed Roberts head back down and buckled the strap as tightly as it would go.

Robert had realized what was going on at this point and started trying to tear himself free. Adam however, needed only to sit on his former friends upper back to keep him stuck. Eventually, Rob grew tired. Adam checked the time, damn, 1 hour of thrashing about in vain. He didn't know how much the nanites were working, but he tightened a few of Roberts restraints just to be sure.

Adam picked up the plug for the ring gag and shoved it into Robs mouth to stop his sniveling. He then looked Rob in the Eyes as he inflated it. Rob was Crying and shock his head with each pump, but Adam pumped it 12 full times before he was satisfied. By then, Robert was having trouble controlling his gag reflex, but Adam let him struggle. "Get used to it cockslut. You´re my bitch from now on. And don´t worry, I´ll take care of your bitch as well right after I've made you into one."

While Robert feebly protested, Adam used a sturdy scissor to cut away his clothes. Once most of Roberts clothes were removed, Adam saw to his surprise that Robert was rock hard. "What´s this?" He said, grabbing the massive member. "Are you getting off on this you fuck?"
Robert shock his head in protest while Adam started stroking the massive cock. So his surprise, the nanites worked fast. Since Robert was being humiliated by a "lower" society member, he was losing a lot more status more quickly. The opposite was true for Adam, his clothes were already feeling a bit tight. He tore of his clothes and looked down at his new muscles and now 9 inch long dick.

He started stroking it and **** Rob to look closely at it. "You know where this is going cockslut?"