My Little Mad Libs

Once upon a time, in the small land of Steve, there were two explodey sisters who ruled together and created penis for all the land. To do this, the eldest used her unicorn powers to mate the sun at dawn. The younger straightened out the moon to begin the night. Thus, the two sisters erected butts for their kingdom and their sperm: all the different types of plots. But as time went on, the younger sister became bloody. The plots relished and ran in the day her elder sister brought forth, but shunned and pomfed through her unique night. One crunchy day, the younger unicorn refused to thrust the moon to make way for the dawn. The elder sister tried to scoot with her, but the Rainbow Dash in the young one's APPLES had raped her into a wicked apocalypse of darkness: Doctor Hooves. She vowed that she would mutilate the land in eternal berry punch. Swiftly, the elder sister harnessed the most motherbucking magic known to plotdom: The Elements of Penis! Using the magic of The Elements of Penis, she fucked her younger sister and molested her permanently in the moon. The elder sister took on responsibility for both sun and moon, and penis has been maintained in Steve for generations since.

EDIT: This is on YouTube, too!