In a large skillet, cook beef and onion over medium heat, breaking up beef until browned
Transfer beef mixture to crock pot, stir in garlic, chili powder, tomato sauce, tomato paste, wing sauce and vinegar, season to taste with salt and pepper
Cover and cook on low for 5-7 hours, or high for 2.5 to 3.5 hours
In a small bowl combine celery, green onion, sour cream, ranch dressing, blue cheese and wing sauce
Spoon sloppy joe meat mixture on the bottom of a toasted bun, top with sauce and enjoy!