A crazy invention of Scott Pederson who has copyrighted the term, which refers to the decade 2000 - 2009 in the hopes of making shitloads of money once the term becomes popular.
Aeugh or Augh or Aegh is normally used when disgusted or when your mouth is full of food, it refers to the sound made by the viral pufferfish that is fed carrots. It's rapidly used by little kids when they first learn it.