Mu best friend is MU (Master of the Universe) and I am UGA (Ultimate Goddess of All)
forgot where that came from, but when we get in a silly mood, it comes into play. And when we sometimes call each other MU or UGA in mixed company, we like the confused looks.
In taking a child development course in highschool, we were discussing our births. My friend was an 'easy' birth, and i was difficult. thus our nicknames became "easy" and "difficult". that one was a lot of fun to yell in the halls