When a Third-Grader Threatens to Shoot His Friends, What Do You Do?

In Lifehacker’s first-ever Parental Advisory advice column, I’m diving right in to a topic that kids and parents should never have to deal with—and yet, here we are. What do you do when one third-grader tells a bunch of other third-graders (including your own child) that he’s going to get his dad’s gun and “kill…