Here's the official teaser trailer for the new horror short Knob Goblins. The film is about a mental patient who is allowed to return to his childhood home, so he can finally face the death of his younger brother. The film is also about a demonic creature that bites your junk off. The film stars Michael Williams, Yale Giffin, Christopher Houldsworth, Jaysen Buterin and Tom Gore. The film was directed and written by Christopher G. Moore. Ismail Abdelkhalek was the movie's cinematographer.