An artificial and mysterious effect that reduces, sometimes to the point of near non-existence, the natural radiation of awesome emanating from a person. This can lead said "disguised" person to a state best described as invisibility, particularly if they are wearing a duck on their head or are sporting a moustache biscuit.
Arguments over whether ninja are actually in disguise have led to hundreds of known cases of flipping out on the part of the ninja themselves. The survivors have not yet managed to relate Classical Theory to the natural state of a ninja. The gist of the discussion goes:
