Complex sentence: Savini voiced himself on the "The Simpsons" episode "Worst Episode Ever", making an appearance at Android's Dungeon that performs the "Gutbuster" gag, covering the crowd in "blood and guts" and consequently humiliating the Comic Book Guy.
Split into simpler sentences: Savini voiced himself on the "The Simpsons" episode "Worst Episode Ever". While making an appearance at Android's Dungeon, Savini performs the "Gutbuster" gag, covering the crowd in "blood and guts" and consequently humiliating the Comic Book Guy.