You saw the stumps of the sex doll torso start growing what seemed like buds. You could feel your dam burst and could feel your fluids rushing out and into this magical sex doll that seemed to be growing it's appendages that started to look less like blobs as they gained definition. Feet, hands, and a head... reminded you of a Mr. Potato head except their arms, legs, and neck were growing in. You also were guessing this was part of the magic as you could still feel the cum coming out and you were beginning to feel drained. Your arms feeling weak stopped moving the sex doll up and down, but the sex doll itself grew long enough legs and arms to let it ride you by itself. Your senses were dulled a bit by your weakening senses along with whatever senses you had left being massively concentrated in your dick. That said since you did have a good sense of touch in your groin the sex doll felt like it was gaining weight... Significantly more than just from a few small appendages. Slowly your diminished senses all left you aside from the sense of touch in your groin. A nice pleasurable warm dampness that slowly diminished till the thrusting seemed to end.
When you woke up you quickly found yourself cuddling a sex doll with just a t-shirt on, but this one wasn't the one you had bought. This one while a similar size and texture of the one you had bought was male, a little chubby, and yeah... had a fake dick. Gasping in pushed the thing away and tried standing up, but stumbled a bit. Your body felt different, a different center of gravity, and looking down you saw a sizeable pair of breasts. You were in the bathroom so you quickly looked in the mirror and saw a girl you didn't recognize in the mirror. She kinda looked like your sister in a way, but like she paid an artist to edit her to look perfect. You could feel a heart beating in your bosom, but that didn't feel that reassuring to you as you were pretty sure somehow you were sucked into a sex doll.
Looking back at what you assumed was your body you decided to try testing it by giving your old stiff member a hand job, and just like the sex doll you fucked before the dick felt like it was coming alive. Technically you weren't sure if having sex with it would bring you back into your normal body for sure, but you imagined it would probably work that way. All it would have to take was... You slowly tried inching your old dick towards your vaginal hole... Slowly but surely... inch by inch... centimeter by... millimeter... You pushed your old body away again. It just felt intimidating and odd to pierce yourself with your own phallus. You sighed and decided that if you were going to be in this body while you should try getting dressed... but first... Dragging a sex doll wasn't as easy leaving you open to being found out... or tripping... or some random thing happening.