BLESS THIS MESS
Remove the pork tenderloin from the package, and place it on a cutting board.
In a small bowl combine the salt, smoked paprika, garlic powder, and onion powder. Mix to combine.
Rub your spice mixture all over the tenderloin, and then place it in the bottom of your slow cooker.
Add the water or chicken stock to the bottom of the slow cooker (don't pour it over the pork, though, so that you don't wash off your spice rub).
Add the lid and cook on high for 4-5 hours, or until the tenderloin is easy to shred with a fork.
Remove the pork from the crock pot, and shred with 2 forks. Return it to the slow cooker, and mix it with any liquid that might have remained in the bottom of the slow cooker.
Add your BBQ sauce, and stir to combine. Adjust salt and BBQ amounts to your liking, serve warm.