In a large bowl mix together 2 pudding mixes, eagle brand sweet condensed milk and 2 cans of cold water. Whip together pudding will begin to thicken, then put in refrigerator until completed thickening, should take 10-15 min.
Remove thickened pudding and completely fold in Cool Whip. In another bowl put a spoonful of pudding in the bottom of bowl and begin layering banana slices, nilla wafers, pudding, repeat. The last layer should be pudding, then garnish top with a few banana slices and nilla wafers.