On one of the shelves you see what looks like a red fleshlight sex toy, you pick up the toy to inspect it and on the label it simply says:
"Real" Feel Vagina (Self Lubricating)
You say to yourself "Ah perfect I've been meaning to pick up one of these"
It looks very lifelike apart from it being bright red, you take the strange object to the front counter you ask how much it is.
The cashier says "25 dollars, enjoy"
You rush home excited to use it for the first time, once in your room you strip all your clothes off and lay on your bed. You inspect the fleshlight and start putting your fingers in the vagina testing how strong the toy was and how the self lubricating works. Surprised again at how lifelike it is you see all the parts of a pussy you have seen in porn so many times and a few in real life, It was getting wetter and it started to smell but it was the good feminine pussy juices smell that was unmistakable.
"Wow I guess they figured out the art of feminine self lubrication and added it to this toy somehow." You had to tell yourself getting very excited.
You start moving the case up and down sliding your cock into the fleshlight and you start moving it faster and faster. Once you work your dick fully into the toy you started feeling a very intense pleasure you have never even felt during real sex.
The feeling of penetrating this sex toy was so intense that you were only a dozen strokes in to your session when you suddenly and violently cum.
You were overcome with an intense afterglow and happily fell asleep with the fleshlight still on the end of your dick.
It was already working its magic and had started the change process emitting an even stronger red light.