I have no idea how I came up with this, but here it is anyway.
The command allows the host to type /spawnhuman.
What it does is, creates a gigantic portal. Coming out of it, is a really forgetin' big human being. Somehow, he has found his way into our LEGO-like world. Unfortunately for us little plastic beings, this human is panicking like crazy from what just happened to him. Until an admin returns him to the real world/we kill it, he will go on a rampage, destroying bricks.
The human would be a low-poly smoothshaded model.