Regarding sex dolls:
So I've been pondering how to combine a TPE vagina insert, with a low maintenance silicone doll... 
and I think I have a solution.
You wouldn't want seams on your waifu's body, right? But silicone can't stretch enough to accommodate a removable insert, right?
Get this: a hollow flexible spine. It would grant service access when the head is removed. And the spine terminates at the vagina. So the insert would slide down from the neck to the vagina, using a ramrod. 🫡
Actually, it could alternately just be a tube in addition to a non-hollow spine. 
I know, it's genius, right? 
And the insert could have a lanyard attached for retrieval. There could be a ring that's slightly wider than the tube at the end, to prevent it from becoming irretrievable.
* Free idea *
