Macaroni salad with shrimp

Macaroni Salad with Shrimp 

Makes 24 servings. Ingredients:
 * 1/2 pound elbow macaroni cooked
 * 6 ounces tiny shrimp un-drained
 * 2 tablespoons scallion chopped
 * 1 cup mayonnaise
 * 1 tomato chopped - optional
 * pinch pepper

Directions: cook and drain macaroni. Let cool for 30 minutes. Add remaining ingredients. Mix well. Refrigerate overnight.