Erection shown

I found that movie very impressing though sometimes disturbing. I asked myself if it was really necessary to show Lars Eidinger's erection. But then I thought of Lars von Trier and "Idiots" or the French movie "Pola X" and remembered how big the impact on the viewer was...breaking taboos as a dramatic device.
So I think it's ok although some people might detest such development in non-porn movies.