Your body stiffens as you take in the smell, you grunt as you instinctively grab at the loincloth. That orcs loincloth, you need it, and he will give it to you! The orc holds onto the loincloth tightly, but as he sees your muscles strain he loosens his grip just enough for you to take the loincloth. You grin as you hold the loincloth in victory, you continue pressing it against your nose, the smell intoxicating you.
Your other hand moves down and strokes your hardened dick. You rub it roughly, pressing and squeezing it, the brutal play only exciting you further. As you explore your dick, you feel it tighten. Your dick feels harder, mightier, you exert more and more force. Between your rubs, you feel your cockhead change, so much pleasure coats you as you temporarily stop your masturbation. Your hand rests on your cockhead as you feel skin grow, your foreskin returning to you.
You snap back to reality, still sniffing the loincloth, you look to your member. You stare at your enlarged dick, but your focus shifts as you see your feet grow. Your feet enlarge as you spot your skin turning green. The green spreads around your feet, then starts to rise up your legs. As it climbs, your legs begin to be covered in thick black hairs, the hairs creating a trail to your feet as hair grows on the sides. You feel pain as the orc gives a hard punch to your meaty legs. The pain quickly subsides to pleasure, you laugh as you enjoy the orcs abuse on your legs. The other orc laughs with you "GOOD! WE ORCS REVEL IN FIGHTS AND VIOLENCE, ENJOY THIS TREATMENT!"
The other orc holds himself back as the green reaches your chest. It passes your cock without affecting it, you frown, but your frown is quickly replaced as you feel your chest expanding. As the green converts your chest, you see your body press out. New thick muscles grow as you gain a tight 6-pack. You grope the expanding muscle, as you feel thick, growing black hairs press against your hand. You moan as the other orc grabs your pecs, he roughly feels them as they grow. The intense pain of his lustful movements become intense pleasure as your pecs expand to the point where they are larger than your head. The orc begins to play with your now green nipples, he is pressed against your pecs and moves his tongue across them.
Your hand roughly grabs the orc by his hair, you press him harder against your chest as you direct his movements. His tongue moving about your frame like a brush, nibbling into you at your direction. Your grip gets tighter and tighter as the green spreads to your hairy arms. Your larger hand now capable of comfortably holding this brutes head. You direct the orc to your growing pits, he sniffs your musk then smiles as he digs into your hairy underarms.
Finally, the changes climb your now fattened neck as your chin squares. Black hairs grow on your chin and spread up the sides of your face, combining your new facial hair with your regular hair. You grunt as your mouth enflames in pain, you yell and roar as two mighty tusks jut out of your mouth. As your ears stretch, you understand that now you truly look like a rugged, tough orc.
You feel the last of your changes progress as your dick throbs, demanding attention. The green coats your hairy balls, then slowly climbs your shaft. As it climbs, the other orc leaves your pits and looks at you, he yells. "MY BROTHER! CUM! REMOVE THAT WEAK HUMAN CUM SO THAT YOU ARE A PROUD ORC!" You drop the loincloth and move both hands to your cock. You rub it vigorously, with a roar you shoot your human seed across the room, the projectile landing in the hallway. As the seed exits, so does your last human thoughts. Your balls churn as your cock is replenished with orc seeds, and your mind is filled with the thoughts of violent, orc sex.
The orc stares at you with a grin, you know what he wants, you flex and show off your mighty body. After your show, the orc aggressively grabs you and brings you into a kiss, both of you roughly groping and feeling the other. You break the kiss as you hear a man yell, the human in the opposite cell now screaming at what he had witnessed. A muscular hand slaps itself on your shoulder as the orc looks at you "He is all yours!"