Orgasmic Birth

One time, I read that child birth could be painless. I told my friend if I found this to be the case that I would let her know. Okay, no I definitely did not have a painless delivery. But now I heard that an orgasmic birth is a possibility. I wonder. Is that possible?
www.orgasmicbirth.com There is a documentary film that is being shown regarding orgasmic birth. It looks promising!