Or if you don't like that..you know the daily gun-related massacres that occur like clockwork how's about this?
Everyone has to have a loaded gun and on ANNIHILATION DAY everyone armed with 100 round clips goes outside and just start shooting. When the last shot is fired everyone will be dead except the lone survivor.
He will have the entire world all to himself. How do I know it will be a HE? Hes are always more bloodthirsty and loaded for bear than any shes could ever be.
So he roams the world owning everything. How happy right? No one to give him any lip.
