Take 2 cups of Tonic and add 1 drop red food coloring to give it a slightly pick color. Freeze in a round shaped ice cube mold, or go on Amazon and order some novelty brain shaped ice cube trays to use. In a glass add HDC Citrus Vodka and Mountain Dew. Float 2 or 3 brain ice cubes in the glass.
Fun fact: The brain ice cube glows! There are very few edible substances that glow in under a black light but Tonic Water is the best due to the quinine.