Hi Arjan,
 
please allow me to make the last joke about it. (I can't help it).
 
I think I am going to attack my wife when she is coming home from work with a mandau. Just to see if she get naked also....
 
 
Now seriously. Yes it is a real piece of art which is cut here. I suppose it is bone? I never seen anything like it (the carving I mean ofcourse) but is carved wonderfull.
I knew they used (or use) statues with big phallusses to keep away bad spirits. But about the female sexes I didn't know.
 
Anyway, beautiful piece Arjan!