Good use of a comma

It's hunting season in some parts of the world. Recently, there is a poster that says "It's that time again - go out and shoot people! :)" - this got me to think. This sentence is to tell you to go out and shoot people. So, people, watch out, there will be people just go out and start shooting on the street!


How would this be fixed? A comma would have fixed the problem. It would be "It's that time again - go out and shoot, people! :)". This would make so much more sense.