Serve with Anna's cornmeal muffins.
Preheat gas grill to high heat. Grill corn until charred lightly on all sides and kernels are bright yellow. Let cool and remove kernels into a bowl.
Toss all ingredients together and season to taste. The creaminess of the avocado will bind the salad together.
To serve, cut the top of each muffin and spoon a little shrimp salad in each. Cap with muffin top (optional) and serve.