I was under impression the British people started calling Her Majesty, Queen Elizabeth, The Queen Mother by the cozier and most affectionate soubriquet "Queen Mum."

Actually, the affectionate soubriquet "Queen Mum" was first used by a Canadian journo.

Bingley's right - Mom is vile! All us kiddies call our Mum, Mum - she's British and she loathes "Mom." Unfortunately it's difficult, on this continent (N.A.) to find birthday and other greeting cards that say "Mum." We have to write over the "Mom".....