Optional: If you want some added flavor, sear the outside sides of your pork loin or roast in a skillet on high heat until all sides are browned. This step is optional, if you're feeling lazy, its OK to skip it!
Add pork loins or butt to your crockpot and then top with vinegar and Worcestershire sauce. Cook 60 minutes per pound on high or until internal temperature reaches 145° F. Double the cook time if cooking on low.
Move pork to a large bowl and let cool until it's not too hot to touch.Shred pork by hand (or use shredding claws) into a large bowl. Season with salt and pepper to taste.
Toss pork in barbecue sauce and serve immediately or refrigerate and re-heat when ready to eat.
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Notes
Cook time can vary by size and shape of your cut of pork. Use a meat thermometer to check to make sure it's done.
If using a pork butt, score the fat on top to prevent the roast from shrinking as it cooks. Place in crockpot fat-side facing up. (Learn how to score a pork roast)
Do not add barbecue sauce until the pork is fully cooked. The sugar in the sauce will burn if cooked with the pork.