I do not know where his nipples went, but I do know when he changed hands.
I see you all missed the great Cairne/Garrosh fight. Near the end, Cairne had disabled Garrosh’s left hand. Garosh just shifted his axe to his right and replied “Good move Cairne. But there is something you don’t know about me. I…am not left handed!”
Also during said fight, Cairne’s Runespear went through Garrosh’s nose ring and accidently tore it out. It’s the reason he’s been in such a bad mood ever since.