When we first got connected to the internet my twins were only about 18 months old and being a mother of twins pretty much defined who I was back then. So it seemed natural to use Twinmum. I can't always get just Twinmum, so I have used Oz_Twinmum, Twinmum_Too and a few variations. Of course now I am a bit more than just the mother of twins, I'm a mother of 4, a grand mother, a bit of a Stephen King expert, a miniaturist and other things, but the name Twinmum just sticks.
Norma