A beatdown

The demon's gaze fell upon Andy's crotch, and its eyes narrowed in disgust. It was offended by the small, flaccid shape that lay there, a pitiful thing compared to the monstrous, pulsing member that had grown from the floor. The demon's tongue lolled out of its urethral mouth, tasting the air as it regarded Andy's penis with contempt. It seemed to be savoring the moment, enjoying the humiliation that Andy would soon feel when he awoke to find this monstrous presence looming over him.

Andy's dick starts to erect until it reaches its full size of only 4 inches,this made the demon angry and it couldn't stand for this

The demon's face twisted into a grotesque expression of rage, its yellow eyes burning with a fierce intensity. It raised its massive, pulsing member, pointing it directly at Andy's small, inadequate penis. The demon's mind raced, searching for a way to punish Andy for his pitiful size. And then, in a flash of inspiration, it knew what it had to do.

With a flick of its wrist, the demon plunged its tip first inside Andy's small dick As the demon's tip plunged into Andy's small dick, a searing pain shot through his groin, and he felt his body begin to contort in ways that defied human anatomy. The demon's member seemed to be expanding, filling Andy's penis with an otherworldly energy that coursed through his veins like liquid fire. Andy was still asleep despite all this,his body twitching and convulsing as the demon's energy coursed through him.

The demon, now fully inside Andy's penis, began to exert its influence, manipulating the flesh and tissue to do its bidding. With a sickening, wet sound, Andy's penis began to detach itself from his crotch, the skin and muscle tearing apart as it slowly pulled free. The demon's energy pulsed through the penis, causing it to twitch and jerk like a living thing as it landed on the floor with a soft, wet splat.

The penis, now a separate entity from Andy's body, began to move on its own, standing up using it's testicles as legs