I really like this animation. You didn't go overboard with length. It has the perfect number of frames. The story goes across really well. Clearly this guy loves drinking. That's especially accentuated with the nicely done rainbow gradient. Obviously you have a firm technical grasp of the program to be able to pull off such an array of colors.
One thing that really stood out to me was the solid colors of the y, u and exclamation marks. It really adds so much more flavor to the overall feel of the movie; it shows that being different is okay and is a necessary part of this world. The animation itself is just flawless.
Had to give a 4.5, because nothing is truly perfect, but you came pretty close.