Get curly hair from a sock?

Okay I was very skeptical (and excited) at first when I read how you can get curls without a curling iron...The best part...you do it overnight.  This is great for busy mom's like me who shower at night since our children get up at an ungodly hour.
All you so is steal your husbands dress sock and cut a hole in the toe.  Roll the sock so it makes a ring (similar to a hair band).  Put your hair in a super high (like on top of your head) pony tail.  Spritz hair with water so it's damp but not wet and slide your pony tail through the sock bun.  Start at the tip of your hair and roll your hair under the sock bun until you get all your hair in the sock.  This will make a bun on the top of your head that you sleep in...It won't come out...I swear!
Here is where I found the idea and she has a great video for all you visual readers:
Curly Hair from a sock
Day 1 of the sock bun experiment: Big fail.  Although my hair did get volume the curls lasted about 1 hour and they weren't pretty curls...looked like birds nest...This was of course totally my fault so i'm not giving up.  I still have hope!  Someday my hair will look like this: