Melt butter in a small saucepan. Add hot sauce and remove from the heat.
In a large frying pan or deep-fat fryer, heat 1" of oil to 375. Fry wings in batches without crowding until golden brown, 12 1/2 minutes. Drain on paper towels.
Brush wings with spicy butter. Serve warm with Blue Cheese Dipping Sauce.
For Blue Cheese Dipping Sauce: In small bowl, mash the blue cheese, leaving some small lumps. Whisk in the mayonnaise until blended. Add the sour cream, lemon juice, wine vinegar, and hot pepper sauce; whisk until well blended.
