look up any word, like sex:
(in psychology/neuropsychology)

the opposition of an unknown state of being to a known standard that equalizes the relation between two individuals and neutralizes the potential of imminent dominance or violence.

(debt to 'the oxford companion to the mind' -- but original interp/application)
when a chemical reaction causes the body to go entirely numb --without stimulation or sensation. while temporarily numb, the individual remains proprioceptively acute (finely measured balance, spatial orientation, precise movement etc.). in this state of physical "nullification" --or "nulling"-- the subject's reflexes, instincts, and cognizance are enhanced, so that she can perform quick analyses and respond fluidly.

in this case, the subject, sensing danger --subconsciously-- enacts the "unknown state" and looks for the "known standard" in order to neutralize the power relation and stabilize a threatening or dangerous individual long enough to ensure safety.

i only know --experientially-- of an involuntary chemical reaction that numbs the body and sets the "unknown state" in motion. i am not aware that it is evoked as a praxis in self defense or criminal psychology.
by siras March 10, 2011
to go on an all out smoke-athon where the "nuller" smokes everyday of a weekend atleast six bowls everyday of the weekend, the six bowls must be one after another or the "nuller" is a "wankin-nulla" which is a huge poon-job
last weekend me and og smoke got nulled to the fullest

this weekend we are totally getting nulled
by ryan March 25, 2005