Reminds me of a story of Mina & Sally Acorn. I only found 1 (one) pg. of it, so I had trouble finding any explanation. It seems that they drank some chemical that enabled them to turn into - slime. It wasn't enough that Mina became a vest for Sally, but the two turned into churning goo that mixed and jumbled together. At one point, a tentacle penetrated one sexually.
They finally separated - yellow tissue from orange tissue, and reshaped back into Mina & Sally, tho some goo remained stuck to the walls and ceiling ! They said :"good night !" and went back into their own rooms.
Reminds me of a story of Mina & Sally Acorn. I only found 1 (one) pg. of it, so I had trouble findin