Marble Pie takes Sandbar up her ass.

I did some statistics. The vast, vast majority of Marble Pie clop consists of incest, with the second, much smaller tranche being Big Mac. I decided she should get to branch out. I also decided she should boff one of Pinkie's students, just to irk Pinkie. I've written two Gallus fics recently, so Sandbar got elected to put his weewee up Marble's poopoo. Hope you enjoy!