I've just seen this. I had to keep my hand over my mouth whilst looking to stop my gag reflex, but I was facinated. I've never found my cervix, though i confess i havent really gone looking. That woman must have a vagina like a wizards sleeve.
I'm still a bit confused though. When it talks about the cervix being high and open I presume she means the roof of the pic? and it's the end of the tunnel that opens? What on earth is that other little hole for then? I assumed at first we had to get the sperm kind of into that tiny hole? Sort of up and back in like those little ball baring games. Or do we just try and slop it out the other end when it opens like a Zoltan mouth? (sorry, best analogies I could come up with).