If you’re using frozen corn, thaw it out by running it through cool water in a colander. If using canned corn, drain and rinse. Or, if you are grilling your corn, make sure to use a sharp knife to carefully remove the kernels from the cob. Then, let them fully cool to room temperature.
Cut avocado, cucumber and tomatoes into bite-sized pieces.
Dice onions and combine them with the rest of the chopped produce.
Whisk the oil, lime juice and salt together in a small bowl. Lightly toss with your veggies and serve.