Catherine's Tuna Supreme

1 can of tuna in water, drained

1 tomato, chopped

1/2 onion, chopped

10 green olives, chopped

1/2 can kernel corn

mayonaise

salt and pepper

crackers or sandwich bread

Mix all ingredients together, and add mayonnaise until it become pasty like a spread. Add salt and pepper to taste. Spread it on crackers or bread cut in smaller pieces and serve.