Peel the tomato and cut it into small cubes: pour into a bowl. Add 1 tablespoon of canned corn. Add a pinch of salt and mix well. Place a large lettuce leaf, 3 slices of processed cheese and ham on the tortilla. Sprinkle the whole with previously prepared vegetables. Wrap the tortilla and heat in the microwave for 10-15 seconds so the cheese will dissolve gently. Cut the wrap into 3 pieces equally. Your perfect snack for lunchtime is ready!