Top Definition
When a person delightfully sticks their bare-ass in the receiver's face to accomplish the goal of shooting a noxious substance, thus containing the situation without using pepper-spray.
Andy felt like he would be raped by this man, so since his pants were already down and he was bent over, he used assmace to subdue the pervert.
by ψThrash Till Deathψ July 16, 2009
10 Words related to assmace

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