Gender Prediction - The Ring Test

Our BIG ultrasound is only 4 days away!  This will only be our second ultrasound in this pregnancy.  Since we elected not to do the NT screening, and haven't had any other complications, there was no need for any other scans up until now.  We are so excited!  I just can't wait to see these little babies actually looking like babies, and wriggling around for mom and dad.  Apparently our appointment is close to an hour long, as they do all the measurements.  And, they will be checking for gender. 

BUT... DH and I are 99% sure we don't want to find out the genders.  While we are super anxious to find out more about our little ones, I have always thought there was something so special about finding out the sex right at birth.  That moment has always been held as a magical moment in my mind.  Plus, even if we did find out, we do not want to tell anyone (family included) what we are having.  Sure, it would be easier for planning and preparing, but most of what we like is more neutral anyways.  And they will be born right before Christmas, so that can be an excuse to spoil them with gender specific items. Though, if we happen to "see" something in the ultrasound, I won't be too disappointed...

Here's the thing though... there definitely is a part of us that already wants to identify with these babies as boys or girls.  Right from the beginning, DH has said he is sure that they are one boy and one girl.  While I can't deny, that is our "first" choice (though that sounds even rude to say, as we are just so thankful to have any babies at all), I have remained more suspicious and keep trying to get DH to think of other names, rather than the two we have picked out.  So yesterday we were reading about gender predictions and old wives tales to see if anything related to us.  Of course, having twins makes it that much harder.  But then DH suggested we do the ring test, and I skeptically agreed (mostly just to appease him).

For those who don't know, the ring test involves taking a wedding ring (or a pin) and tying it to a piece of string.  Then the pregnant lady lies on her back with her belly up, and the ring is held just above the belly.  If the ring makes a circular motion, it means the baby is a girl.  If the ring sways back and forth in a line, it's a boy.  Now, since we haven't had an u/s yet, I don't know exactly the positions of the babies, but I have a sense that one is up higher on the right side, and one is down lower on the left side.  When we heard the heartbeats, I guessed that the one on the right is a girl and the left is a boy.  So, as DH held the ring above the right side, it took a moment to settle, and then it CLEARLY started to move in a circular motion.  We kind of chuckled, but then he held it over the left side, and the pattern completely changed and started to make a line back and forth.  I thought he must have been manipulating it, but we tried again, and it happened again.  Then, today we did it one more time, and the SAME THING happened!  By this time, I was a little freaked out.  It felt like some ouija board witchcraft voodoo or something, haha!  But still!  It was kind of super cool.  I found it just crazy that it made two different patterns for different sides of my belly.  Could it be that babies have their own sort of magnetic field in the womb?  Is it just a coincidence? 

Has anyone else tried this and found it accurate?  What do you think we are going to have?