Domaruuuuuu
From BGWiki
Domaruuuuuu! 
Specifically the Hachiman Domaru, which if you equip one outside of a WS swap macro (and even that's debatable), you will find a screenshot of yourself posted here.
Your gear is bad and you should feel bad!
When encountering someone wearing Hachiman Domaru one must /shout "DOMARUUUUU"
