Place the ingredients into the blender in the following order: flax, spinach, banana, pineapple juice, and lemon juice. The reason for this order is so the heavier ingredients weigh down the lighter ones, keeping them from flying up & around the blender and sticking to the side. Blend for about 1 minute, add ice, and blend again until smooth. Pour into a big glass. And, for extra fun, serve with a paper umbrella; they make everything taste better.