1 lb. shell macaroni, cooked
2 cans shrimp or more
1 1/2 c. chopped celery
1 small cucumber, chopped up
2/3 c. mayonnaise
1/3 c. sour cream
2 Tbsp. horseradish
1 Tbsp. grated onion
1 tsp. salt
1/2 tsp. pepper

Mix all together and chill.