Anyone have info on the origin of this video clip?

Real Zombies?!? - (link goes to Kontraband.com, and should be mostly SFW, but that's not guaranteed, so, just warning ya)

I'd love to know where this came from, and what's going on. I don't buy it as reality, in which case it's funny...but just imagine if it wasn't...I'd play in a heartbeat!