To prepare the Crock Pot Pulled Pork: Rinse pork butt in cold water and pat dry. Combine all of the spices and the brown sugar in a bowl. Rub the seasonings into the pork butt on all sides. Place the apple cider vinegar and water in your slow cooker, then place the seasoned pork butt into the slow cooker. Cover and cook on low for 8 hours. Remove from the crock pot, shred meat, and discard any fat. Reserve about a cup of the liquid. Place shredded pork back in the crock pot, with the reserved liquid, to keep warm.
To prepare the Dorothy Lynch Coleslaw: Mix mayo, Dorothy Lynch, buttermilk, sugar, celery seed, salt and pepper together. Pour over coleslaw mix and stir to combine. Cover and refrigerate for at least 8 hours.
Pile pulled pork onto hamburger buns, top with coleslaw and serve.