"ok kiddo, here it goes. Dad's penis swells up through an inflood of blood, and then he projectiles semen into mommy. Usually mommy would bleed out of her vagina shortly after, but not this time. It all gets lodged in there and starts to breed. A few months in, your mom's organs are all displaced, and when she finally gives birth it's blood everywhere, including some nasty piece of afterbirth. Oh yeah, and poop got into her ripped perineum, and now she will have to be on antibiotics for a while, and have a hard time enjoying anything down there for a while.
Any questions? Good night."