Whisk barbecue sauce, grape jelly, brown sugar, Worcestershire, vinegar, garlic, onion, paprika, and hot sauce in a pot.
Warm over medium heat, stirring, until the jelly melts and the sauce is smooth, 3–4 minutes.
Add the smokies and stir to coat well.
Lower heat and simmer gently, stirring occasionally, until sausages are heated through and sauce thickens, 12–15 minutes.
Serve warm with toothpicks, keeping the pot on low or transfer to a small slow cooker to hold.