1 can diced tomatoes (15.5 oz drained)
1 can black beans (15.5 oz drained and rinsed)
1/2 cup whole kernel white corn
1 can diced green chilies (4 oz drained)
1/4 cup diced red onion
1 tbsp lime juice
1 tbsp red pepper sauce
1 tbsp dried cilantro
1/3 tsp ground cumin

Mix all ingredients. Cover and refrigerate for about 1 hour before serving.  You may want to double or triple this recipe, because it will go fast.
You can use yellow sweet corn if that is what you have on hand, you can also add a little cayenne pepper for extra heat if desired.