The act of standing with arms
aloft, in a confrontational manner, shouting "Come on then, Let's av it, Do you want some". The
estuary haka is often done from the relative safety of behind a police
cordon.
There is nothing quite as funny as the hate contorted face of a 19 year old, standing on a plastic seat ,doing an
estuary haka at the opposition fans separated by nothing other than a wall, a 30 yard
dmz, another wall, 300 stewards, 200
riot police and all the other supporters who are standing in front of him.
(from a post by surfaceagentX2zero)