This is one of those recipes that is all according to your preferences. Amounts given are meant to be a starting place.
2-4 cans shoepeg corn (I like yellow and white mixed corn)
1-2 bell peppers, chopped
1-2 Roma/plum tomatoes, diced
2-6 green onions, sliced
2-3 Tbsp mayonnaise
1-2 Tbsp sugar
salt and pepper to taste
Drain the corn while chopping everything else. Toss it all together and chill at least 4 hours before serving.