After three people tried to rob a dispensary, the worker grabbed his weapon of choice.

The three would-be-thieves ran into this dispensary and "opened fire" with what appears to be some sort of pepper spray.

That didn't stop one of the workers from defending his loot. He grabs a bong, and raises it like a baseball bat. This causes the faux-robbers to immediately back off.

The three of them then make their way toward the door and outside as the worker starts to swing the bong at them. It looks like he's able to close and lock the door, too.

Success.