Glowing Green Liquid Recipe - Take a glass or plastic container that will hold two pints of water. The color of the liquid depends on the color of highlighter pens that you use, open up two highlighters of the same color and put the contents into the water. Mash the highlighter material with the back of a large spoon. Soon the water will turn very neon. This is your concentrated liquid, dilute with regular water to reach desired brightness.
Now Presenting, "Complements/Reciprocal Relationships"
One hen, two ducks...