An ancient greeting bestowed upon us by the all-seeing high priestess Ninomae Ina'nis, performed by smiling, and rising your eyebrows.
It has been proven to reset your sanity levels when hearing it from her on a live stream.
Studies about its meaning speculate the word is a contraption of "lloig wgahโn", meaning: be/reside in psyche, however this hasn't been confirmed yet.
Used by a Godly entity knowns as 'Waluigi'. This omnipotent being is the origin of the noise. He radiates such a divine presence that no human can go near him. Only through the word of 'WAH' can a form like his be attained. There is only one living human 'Waluigi' his name is ๐๐๐๐.