"There is no real consistent behavioral pattern when it comes to LIFE." Sane or insanity lays directly in the same definition with each other, when one can not control a thought it is the real test of your physical and mental control (internal/external response mechanism). The outburst of a "normal" person is the exact same outburst of an insane person. The only thing that was different about these outburst was the very people who witness it and how they reacted to it. Outburst are normal humanitarian traits and an evolutionary creation to embrace.