Provides, unequivocally and solely, a legislative redefinition of the mens rea element for specific and general intent crimes where voluntary intoxication is alleged as part of a defense, that a voluntary intoxicated condition or state is not a defense to any criminal offense, and that voluntary intoxication may not be taken into consideration in determining the existence of a mental state which is an element of the offense unless the defendant proves that he or she did not know that it was an intoxicating substance when he or she consumed the substance causing the condition or state.