Easy BBQ Pork

pork shoulder roast
1 large onion; halved length-wise and thinely sliced
2 tablespoons Worcestershire sauce
water
1 bottle of favorite barbecue sauce

Place pork roast in crockpot. Add onion and worcestershire sauce.
Add water to cover. Cover and cook on low for about 10 hours.
Remove roast, discarding cooking water. Save onions.
Shred pork and discard any fat and bones. Return shredded meat and onions to crockpot. Dump a bottle of your favorite barbeque sauce over it and cook an hour on low until heated thoroughly. Serve alone or on bread slices or buns.