Fiery energy races through your body, as the devil dong within you does its work. But instead of shrinking, your body begins to swell with power, and you feel your remaining clothes growing tight. Slowly, you get up from the floor, your body still burning. You look down, and see that your arms are growing larger and more muscular, while turning a deep red. You kick your pants across the floor, and rip the shirt off of your body with a satisfied grunt. You feel heavy wings grow from your back, and a tail from your behind, even as huge, curving horns erupt from your head. And between your legs grows the most glorious cock you've ever seen. Thick and long, its odd ridges make it look deliciously evil. Your devil dong surpasses the dildo in size; it is truly a monstrous thing, but appropriate on your hugely-muscled demon body.
The demon-girl saunters over to you, her hips swaying seductively, her big breasts bobbing, her tail swishing in an almost lewd manner. "Mmmmmm..." she murmurs, running her hands over your thick, jutting pecs, down your hard cobblestone abs, and finally grasping your demon dick with her strong hands. "This is more like it!"