Apparently its an egyptian half dead half alive woman, something about Osiris or whatever. He has to be an idiot at a ridiculous level to not think people would make the connection between this and Rihanna.
Maybe it's just me, but this tattoo doesn't really look like a "battered woman" to me (more likely a woman with half her face painted as a mexican sugar-skull or a zombie or something). Chris Brown is still (and probably will always be) a piece of shit, but I think everybody here is grabbing their pitchforks a bit too quickly.
That's disgusting. What a terrible thing to ink on yourself permanently. I wonder if, someday, he'll regret it, along with the violent stuff he's done.