Top definition
An acronym for Reality Based Self Defense, it is used by such martial arts as krav maga and is supposed to take situations that would occur commonly in a situation involving mugging and/or rape or other forms of assault on the street.

Usually it is defined by eye-pokes, groin grabs, and other desperation techniques.
"Grab twist pull"
~ A montra of an RBSD (RAD) in some high schools; refers to grabbing and yanking on an attackers genitals.
by World War Cheese October 04, 2006
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