A true Rasta man cannot drink be drunk.

I and I is a complex term, referring to the oneness of Jah (God) and every human. Rastafarian scholar E. E. Cashmore: "I and I is an expression to totalize the concept of oneness, the oneness of two persons. So God is within all of us and we are in fact one people. I and I means that God is in all men. The bond of Ras Tafari is the bond of God, the bond of man. But man itself needs a head and the head of man is His Imperial Majesty Haile Selassie the first of Ethiopia." The term is often used in place of "you and I" or "we" among Rastafarians, implying that both persons are united under the love of Jah. The term "I" replaces "me", which is felt to turn the person into an object, whereas I emphasises the subjectivity of an individual.

However, I is indeed drunk. And sick.

All of this comes (apart from my empirically established drunkeness and sickness) via The Wikipedia, which can substitute for real knowledge as well as anything.