Shortened version for saying; "I'm about to right now."
Also used to state that the individual using the phrase, is about to make some sort of move, take action, or do something that was already assumed by the present crowd.
Guy #2: "OOoooooooohhh yeaaa. Im bata rana"
Guy #1: "Did you ever end up stopping at the ATM to get the cash you owe me?"
Guy #2: "Shit man, I totally forgot. I'm bata rana."