Immediately, his body begins to transform. His hair almost completely disappears except on his head, arms, and pubic area. His body tighten and firms as his chest expands. His arms and legs thicken out, as of someone who worked out quite frequently. The prisoner stares at his body with excitement and moves his hands all around his torso. His muscles bulge and contract as if they are magically charged.
Once finished with his transformation, the fun is to begin.
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The prisioner locks you in a long seductive kiss, you feel a little overwhelmed as he pulls you shirt off revealing you thick heavy chest. He continues kissing down your body slowly stripping you as he goes, soon you're only wearing the leather underwear.
The prisoner spins you around, pulls his dick out of his underwear and pulls down your leather shorts. Without warning the prisoner slams his dick into you he starts to pump you long and deep. With all your clothes gone, you start to change back to your original form - within minutes you're half the size of the prisoner. Suddenly he grabs you and puts you in a arm lock, he squeezes his thick bicep cutting off you're air - moments later you fall unconscious.
The prisoner pulls off his own white shorts, reverting back to his own form. His plan was nearing completion, the criminal pulled on the leather underwear, followed by the rest of the cop's gear - within a moments the changes started to happen..
His calves and thighs bulge outward, straining the fabric. His waist remains thin, but his package does not. From it's original six inches, his cock begins to trail down his already tight pant leg.
His shirt tightens as his pecs grow to fill it in just as it had when you wore the clothes. His arms, specifically his biceps and forearms, grow into hunks of muscles. He flex's a bicep, making it the size of a bowling ball. The guys neck thickens and stubble begins to grow on his chin. His hair lengthens into a shaggy cut, almost covering your eyes, and his face changes to the one you were wearing minutes earlier.
The new cop slips the white underwear on your unconscious body transforming you into the convict... The new cop chuckles to himself as he leaves locking the cell. The new cop finishes you shift and leaves to life your stolen life.