Rock, Paper Shotgun have discovered this little glitch, which uses the “/getdown” command to avoid damage from attacking enemies. “Any enemy currently targeting you will be interrupted…even a boss.”
Be sure to get it on until the night is gone as soon as you can, because since this is funny enough to be worth a post it’s certainly something that will be patched right-quick.
Update: There is a bit of a rumour flying around that people have been banned for doing this, so best not try it, eh? The “dance zones” mention don’t appear to exist, though, so who knows. Will update with more if it comes though.