This is a variation of another manuever called space docking (pooping directly from the anus into a vagina) The difference here is that one female defacates into the other females vagina and then in turn that shit filled vagina squeezes it back out into the other vagina. Back and fourth and so on.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.