1. In a medium bowl, whisk together the apple cider vinegar, ketchup, brown sugar, Worcestershire sauce, salt, crushed red pepper flakes, black pepper, garlic powder, onion powder, and smoked paprika.
2. Place the pork shoulder in the slow cooker and pour the vinegar mixture over the meat, ensuring it is evenly coated.
3. Cover the slow cooker and cook on low for 8-10 hours or on high for 4-6 hours, until the pork is tender and falls apart easily.
4. Once cooked, transfer the pork to a cutting board and use two forks to shred the meat. Discard any large pieces of fat.
5. Return the shredded pork to the slow cooker and stir to combine with the cooking juices. Let it sit for another 10-15 minutes to absorb the flavors.
6. Serve the pork hot with your favorite sides and enjoy!
