randorambo
noun: Someone whose first reaction to hearing about a mass shooting is to confidently declare that, had they been their with their sidepiece, things would have gone down differently. Derived from the words random as in, "some random asshole" and Rambo as in, "some asshole who thinks he's an action hero because he knows how to hold a gun without shooting himself in the face".
We were talking about that shooting that happened last week and Bob just had to chime in that it never would have happened if he and his gun had been there. That guy's a real randorambo.