You stare confused at the door closing behind the woman, thinking that maybe becoming a dog is not a a good idea, but the german shepherd bitch starts rubbing her body against you, whining and panting on your canine ears.
You smell something in the air, something... That makes you think on mounting this bitch, making your pinkish doggy dick slides slightly from your canine sheath...
"No!" You think "I won't be able to get out of this costume if I do this!"
You bark desperately at the door, calling for the woman to take you out of there, not noticing the german shepherd bitch sliding down your body, getting to your ass.
You stop barking abruptly as you feel the warm, long and moist tongue of the bitch lapping your balls and sheath, her tip rasping the tip of your canine pinkish dick, making you moan in pleasure, enjoying the wild caressing between your thighs, remembering how good your human penis felt when it slid in the furry sheath of the costume and morphed into a doggy pinkish dick.
Your dick poked 8 inches long like a pulsing rocket out of your sheath.
"Well, she said that having sex often locks the costume..." You remember the woman's words.
'often' doesn't mean always, right?
Besides, you're really enjoying what the bitch is doing under you, making you reconsider mounting her more and more as you smell more of her delicious vaginal scent invading your nostrils like perfume.
"I'll do it" you think, panting hard, "who said I'm going to be locked down by the costume for ever if I mount her. Is just a possibility"
The bitch stops licking you. You turn around, still panting hard and look at her turning around; she lifted her tail, presenting her cunt to you. You can see drops of liquid coming out of her vulva, making clear where the strong smell is coming from. You turn your body around, following your nose closer to that strong delicious smell of musk that fills the air and start licking the german shepherd's bitch vagina uncontrollably, tasting the juices as thick droplets of pre begin to splatter from your cock onto the ground.
You're ready to mount this bitch.
You jump on her back, positioning your front paws on her sides and, with your hips, looking for her opening, which you find quickly with the point of your dick. You start thrusting in and out, slowly first, but faster by the time, your knot revealing itself from your sheath as you slap the german shepherd bitch's opening with it, making the bitch moaning and whining of pleasure with you.
A collar forms around your furry neck, sealing the costume as your new body, but you don't even notice it, because in that moment you insert your knot onto the bitch's vagina. You moan in pleasure, making short strokes as you pant crazily.
You're now a full, horny german shepherd dog!
As you hump the bitch below you, you don't even care about being human again, you just dream awake about having more and more sex with this bitch whenever you want, for ever.
Your cock pulses unstoppably.
With a final pulse, your cock explodes inside the bitch's vagina, filling her with your doggy semen with long and repeated loads of cum like a human never could.
After filling her cunt with your canine seed, you lie on the bitch's back, panting uncontrollably as you lick the side of her muzzle. She laps you back, like giving you a kiss while waiting for your swollen knot to soften.
Being a dog feels great, you never want to return to your human form ever again.