This is a 'Bad Dog' firework that produces a monster turd out of its flaming ass after the fuse is lit. It's basically just a black snake firework with some bonus crackles at the end. Still, the flaming ass: I think we've all been there. Being doubled over on the toilet in pain wondering if your butthole will ever be the same -- that is like, the number one shared human experience.
Keep going for the video, then throw any left over 4th of July fireworks in a paper grocery bag and light the whole thing on fire.
Thanks to Brenna, who went to a fireworks display that consisted entirely of black snakes, making it the worst display of fireworks of all time.