Pre-heat oven to 350°F degrees.
In a small bowl, mix mayonnaise, sour cream, and cream cheese until thoroughly combined.
Crumble bacon into mixture and stir.
Add cheddar cheese, green onions, and tomato; mix well.
Pour into a shallow dish or pie pan and bake for 20 minutes or until bubbling.
After removing from oven, garnish with additional green onions, tomato, and crumbled bacon, if desired.
Serve with corn chips.