Musky Mole Rat

The act of covering a naked mole rat in spunk or feces, per preference of the partner, followed by insertion of the mole rat's own feces into a man's anus. The mole rat, then consumed by the desire to eat its own feces, chases the turd into the anus through a glass tube inserted into the man's butthole. While this is happening, said partner screams "YOU MUST CONTAIN THE BEAST" as the other man shrieks with terror and pleasure as the naked mole rat is inside of his anal cavity.