I'm too young to buy a fake vagina. How can i make one that also simulates warmth.
Get two sponges, a cup, and a latex glove
Put the sponges under warm water. Then squeeze some of the water out of them, sandwich the two sponges together with the glove in the middle. Put them into the cup, and fold the glove's hand hole on the outer part of the cup. Enjoy!
Cut a diaper open, put the powder in a jar, put warm water in, and because the powder will absorb a crapload of water, it will turn into more of a goop.