You're startled by the abrupt changes, and in a moment of panic you pull at the werewolf mask. You feel a brief moment of suction around your face, and then suddenly it's off. You stand there panting, until the adrenaline wears off, then you look in the mirror again.
You're still mostly werewolf, but with your normal human head. You stare into your own blue eyes, and then look down at yourself.
You lift your empty hand and flex your fingers, inspecting your black claws and the fleshy black pad on your palm. You run your hand across your muscular chest, and then down along the fur-covered, chiselled abs. You look at the mask again, staring into the empty eyes, then turn it around and set it over your face.
This time you blink deliberately, and watch your eyes turn from blue to yellow. You tilt your head, swivel your pointed ears first one at a time, then both, and bare your fangs. You loll your wide tongue out and lick your nose, just because you can, and then you feel ravenously hungry.
'huh,' you try to say, but it comes out as a small "wuff", and you put both hands to your muscled, growling abdomen.
You look around, and then you pad out of the changing room. You see a human figure coming towards you and you feel saliva fill your mouth, but then you see it's your uncle and suddenly the idea of swallowing him whole just isn't appealing. You drop to all fours and take a few loping strides up to him, and then stand to push your muzzle in his face and make a few whining noises.
"Werewolf, huh?" His tone is mildly amused. "It's got a soft vore option, you know. You swallow someone whole, they go down to your gut, and then you get stuck like that until you bring them back up. Not me, of course. I'm very averse to being eaten and digested, even temporarily."
You stare at him intently, until he leans towards one of your pointed ears.
"Alex is around here somewhere," he murmurs, and your ear flicks from the feel of his breath. "The digestion part is painless, but I'm sure he'll be thrilled to be involved. Otherwise, you could just take the costume off and have lunch with me."