"Ha!" says the woman. "Actually, hang on just a moment." The feeling of her finishing inside you is both icky and thrilling, but your mind is beginning to be more clear. You look at her in fear and notice that she is smiling, again, with malice.
"Feel it," she says, touching her own ass. You can tell it's bigger than before. Something happened while you were having sex. You felt it grow in your hands like the first time.
"I wondered why you were transforming so slowly," she said. "You must have an extra powerful human aura. Ah, but don't you worry, it's gone now. Nothing is holding you back from taking your true form."
A pig? Your mind clears. You were so preoccupied with being a woman and experiencing sex from a female point of view that you forgot about becoming a pig. You never would have agreed to have sex with her if you had thought of that! You crawl away from the woman, angry at her and angry at yourself. Your whole body begins to shudder as you move away, as if every part of you is about to burst. You touch your face and you touch your hips. Everything feels wrong. Everything feels like it's shifting.
In a desperate attempt to convince yourself that you are, in fact, human, you move off the cushion and stand on two legs.
The woman pulls a face as her five-minute penis retracts. You watch as it pulls back into her body and reconstitutes her vagina. Not long ago, you had penetrated her, and now she's done it to you. How is this real? You feel a twitching in your torso and you dread to look.