You stick your cock into the hole, closing your eyes, prepared for whatever happens next. You start hearing loud panting and feel warm, sticky drool start dripping on your penis. Suddenly his mouth closes on your cock, biting down on it with sharp teeth, his mouth feeling different than you'd expect, much slimmer. You feel his tounge lick your organ and you feel it start getting erect. You feel him begin to suck on your cock and with the sheer power of his breath it feels incredible. You can't help but get into as your cum just builds and builds until it evauntually erupts into his mouth as he loudly swallows it all down. There's a different feeling though, different from when your girlfriend treats you on your birthday, something almost inhuman. You look down and you see it, brown hairs are covering your body, leading out from the base of your bright red cock. You try to yank your dick out from the hole but whatever it is has a firm grasp with his sharp teeth and will not release it. The fur keeps traveling changing your body along the way. Claws start growing on your hands and feet. You start growing a tail leaving you no choice but to unbutton your pants and let them drop so you have room. Worst of all though your face starts to shift and morph into something not human something more animal. Your transformation ends with an amazing climax bursting flow of cum into your captors mouth with your bright red cock coming from your new large hairy balls. You release a loud howl of pleasure that terrifies you, having been expecting your own voice. He releases his jaws off your penis and you manage to pull it back through the hole in the stall. You watch it slide into it's new sheath and sit there for a moment in silence. You hear the door of the stall open and the sink faucet turn on. You open the stall door a crack to see the man. You gasp loudly because standing at the sink washing his hands is a tall anthro hyena.