wtf is with showing me your piece?

I met some guy for the first time yesterday and in the middle of a mall parking lot he opens the trunk of his car and pulls out a handgun. He takes out the clip and then hands it to another guy who points it at a nearby building and pulls the trigger without even checking to see if there was a round in the chamber. He hands the gun back to the first guy, who then tells a racist joke, gets in his car and leaves.

wtf just happened? Strange afternoon.