A sudden crash from a window behind you jerks you away from your thoughts. You almost collapse when you see the source of the commotion, the rubber wolfman from before standing in shards of shattered glass. It seems puzzled at first, but as its eyes shift towards the broken bridle that confusion immediately changes to anger. It doesn't look like it took too long for it to figure out just what you've done, and from the look on its face it's planning on making sure you can't do it again. Of course, this time your foot isn't stuck, and this time you're on your own turf. This time, you stand a fighting chance.
You grab the knife on the counter without even thinking and wield it towards the wolf, swinging it back and forth and hoping it'll give the monster the message to stay back. It doesn't seem to have any effect, as the wolf starts stepping towards you and snarling even more angrily. Not willing to let him get the first move, you lunge forward and try to plunge the knife into its chest. With a deftness you never would have expected from this creature, it plucks the knife out of your hand and throws it away, pushing you off your feet. It pounces on you and pins you to the ground with astounding strength, and it's only once you're in this extremely vulnerable position that you realize one very important detail: you're still naked. It's when you feel something slide onto your exposed member that you realize another very important detail: the wolf is a she. You never bothered to actually check, but there's not much else the thing sliding up and down on your cock as the wolf rocks back and forth could be.
There's no denying that the smooth latex rubbing you feels good, and as hard as you fight it you can't stop yourself from becoming erect from the stimulation alone. You struggle harder to get the wolf off you, finding the whole situation more and more unpleasant, but every motion you make trying to get her off only seems to make you even more erect.
After what seems like an eternity, the wolf slows to a stop and gets off of you, leaving you a moment to breathe. You feel an intense exhaustion from the whole ordeal and just lie there with your eyes closed for a moment, wondering why the wolf isn't going any further. When you feel a bit better, you open your eyes again... and you immediately scream when you do. Your penis, fresh out of the wolf's body, has been changed back into the massive chunk of black rubber horse meat that it was when you still had the bridle on and is lying against your torso, its tip reaching almost up to your collarbone now that it's fully erect. You can see the slightest bit of milky white cum dripping from it, the drops falling to your chest and leaving streaks of shiny white in their wake. You can even smell it, only it doesn't smell like semen. It smells like...
In an instant, you gain a full realization of what the wolf has done, and with a smug look on her face she climbs back out the window on seeing that you've caught on. Rather than cum, your new penis seems to have white latex like what had been on you when you were the horse before. You don't like having that pointed at your face so you give it the gentlest of prods to try and carefully move it off your chest, and even that slight touch causes it to let out a splurt of latex that instantly coats most of your left shoulder. This heavily aroused, any kind of touch is enough to make instantly cum, meaning that you might not even be able to stand up without spraying all over yourself unless you give it some time to shrink back down to size.