Another version of the word “yallah”, this word means “let’s get a move on young … It has many meanings and uses depending upon how and when it is used. Yesi Yesi, pronounced " Yes-I " is a Rastafarian slang word spoken primarily by the Rastafari as a greeting, acknowledgement, answer or apology (I.e. in the Caribbean and virgin Islands. Hello, whats up, yes sir, yes, I hear you, Hows it going, ect.) Yallah Shabaab.