Transatlantic MNers: Are you a "Mum" or a "Mom"?

[NotQuiteCockney]

I appear to be losing my mind on this. I am writing tags on gifts to the boys, and I seem to be "mom" half the time and "mum" the other half. I normally describe my mom as a mom, as, duh, that's what I called her, but have found myself slipping lately ... gah.

I'm Mummy.

That is what she's always called me.

I don't use 'Mom', anyhow. My mother has always been Mama.