Add the cream cheese, cheddar cheese, mayo, onions, garlic, lemon juice, old bay, hot sauce, and worcestershire to the bowl of a slow cooker. Stir together using a sturdy spoon until everything's mixed together well.
2 8 oz blocks cream cheese, 1 cup shredded cheddar cheese, 1/2 cup mayonnaise, 1/2 cup thinly sliced green onions, 3 cloves garlic, 1 lemon, 1 tbsp Old Bay seasoning, 1 tsp hot sauce, 1 tsp worcestershire sauce