As for the Gaijin Smash it is the mix of 1/3 Zanpa Premium Awamori, 1/3 Monster Orange Energy Drink, 1/3 water, with ice, served in a tall glass.
It is the triple innuendo of cocktails!
First: its mixing a very fine traditional japanese alcohol with a foreign intruder
Second, gaijin could be referred to as "orange monsters" because of our skin color compared to japanese people
Third, only an ignorant gaijin would ruin good Awamori in this way!
A 1/3 mix in a tall glass will also get you good and wasted with 3 or 4 while the energy drink will keep you awake to Gaijin Smash all night long. It is the win win !

For science! we tested several energy drink before deciding on the orange monster. It is the smoothest, but still Gaijin Smash is like being hit in the stomach because first you taste the very smooth fine Awamori and then next is the sickly repulsive after taste of the energy drink. This is also the essence of the Gaijin Smash! As for a bonus, there is one. Orange Monster is essence of "Chaos" just like we Gaijin bring Chaos to the ordered harmonious life of Japanese People. Truly you cannot discern how this is not the Gaijin Smash.
As for the cocktail, comments are wanted. Please try and Gaijin Smash yourself and then be observant of consequences.