The voluntary abstinence of all other forms of nutrients other than alcohol. It is a dietary choice that emphasizes drunkeness over nutrition. It is by no means a long term lifestyle, but can be quite useful in one-off applications.
Q: "Hey aren't you going to have anything for dinner tonight other than booze?"
A: "No that's ok, I am an Alcotarian"
Man I just realized that all I had to eat yesterday was a bagel, I am becoming and Alcotarian
Person 1: "Would you like some Iced Tea?
Person 2: "Is it from Long Island?"
Person 1: "No its domestic.."
Person 2: "No that's ok, Im an Alcotarian"