Yeah, show that shit to the cops. You've got the number should be easy for them to figure out where they live. If the cops don't want to do anything, get creative. Craig's List or maybe if you're feeling particularly vindictive, give the number to 4chan. Let then have fun with him.
Not your personal army.
However, I would pass it along to them as say, a morsel of entertainment. Just bring it to their attention and stand back.
What it really means is that he's a fucking idiot that's likely drunk.