1 can black beans
1 can diced tomatoes (plain or w/ chiles)
8oz frozen corn
1 avocado
lime juice
cilantro
10-16 your choice shells or wraps

Drain and rinse black beans
Drain and lightly rinse tomatoes
Combine beans, tomatoes, and frozen corn in a large bowl
Slice or dice avocado to preferred size, add to bowl
Add lime juice and cilantro to taste
Stir to coat and serve cold on shells/wraps

Depending on how big your shells/wraps are this should make about 10 to 16 servings.