In a large bowl, whisk together the mayonnaise, sour cream, buffalo sauce, and salt and pepper. Using a spatula, gently fold in the remaining ingredients, stirring just until everything is evenly incorporated.
1/2 heaping cup mayonnaise, 1/2 cup sour cream, 4 tbsp buffalo wing sauce, salt and pepper, 1/3 cup diced red onion, 1/4 cup diced celery, 2 hard boiled eggs