Hey guys!
I tried some settings for the cum+squirt combination. It's almost perfect. First I separated the two liquids to get two separate materials. The white is the cum and the darker is the squirt.
After that I tried a few more specific positions and settings.
Then in the end I also tried giving the cum a variable viscosity. This way the cum material itself can develop in the videos in the future. Here the white is the thicker while the dark is the thinner liquid.
This is almost finished. But for some reason I can't separate the Shader Volume node. And because of that the squirt is not transparent. I still have to work on it, research it.