Can't hurt self

[kirbwarrior]

Is there any way to set up a character so any attack they use can't hurt themself? I know with things like Innate Attacks and Modifying ST-Based damage you can just take modifiers to make it so the attack can't hurt you or you have a choice (such as Emanation). But this doesn't apply to, say, picking up a random grenade and throwing it at someone two yards away or accidentally shooting yourself in the foot with the gun you stole from your foe. Any thoughts on how to set this up?

Thanks ahead of time.