How to make an ejaculation effect?
I've answered in my comments section already, where you left a message, but I'll respond here too, in case someone else sees this question.
I use models of white splashes, moving them around when they are shot and, when they collide with the surface they're supposed to stick to, I register a suitable OP for them (like the head, or the arm of the girl), so they'll stick to that surface properly when the girl moves.
I've used different ones before, but this is the one I've used lately, as it is easy to work with and gives good results:
This seems to have no automatic perform calculations function
So do need to adjust slowly?
Yeah, though really it's a simple process. You set it as invisible at the beginning of the video, and then, when it's time for it to come out, you set it to visible and put it in the right position. A few frames later you place it right as it's about to hit the surface, and also register its "model manipulation" panel again. Then, in the next frame, you configure an OP (to make it move according to the surface it's sticking to) and register the "model manipulation" panel again. That's it.