1.Place Meat In A 5-Qt. Slow Cooker. Add Onions And Celery. In A Bowl, Combine The Ketchup, Water, Lemon Juice, Worcestershire Sauce, Brown Sugar, Vinegar, Salt, Mustard, Paprika, Chill Powder, Pepper And Hot Pepper Sauce. Pour Over Meat. Cover And Cook On High For 6-8 Hours. 2.Remove Meat; Cool Slightly. Shred With A Fork. Return To The Sauce And Heat Through. Serve On Rolls.