A magic dump is one that makes you feel alot better. Say for example you have an awful tummy ache and then you poop and it goes away, you just took a magic dump.
My stomach cramps were so awful I thought I was going to die til I took that magic dump.
A theory which posits that once a baby passes through a vagina (or leaves its mothers body) only then magically becomes human. Similar to magic dirty theory where a person emigrating from one region of the planet magically becomes the same as the inhabitants of wherever they have travelled to.
Shaqueesha: "IT'S A FEEEETUSSSS KARL NOT A HUMAN I'TS NOT ALIVE IT DOESN'T HAVE RIGHTS AHHHHHHH"
Karl: "So Magic Vagina Theory it is then."
Two are having sex near a staircase. When the man is about to ejaculate you face her down towards the stairs. Give a good thrust and ride her down the stairs.