Part of the magic of Christmas is for parents and their children to queue for hours on end in an overcrowded store, for the opportunity to visit a fat old man in a red costume, sit on his lap and then get a cheap plastic toy that breaks in five minutes.
Needless to say Nanny doesn't approve of this sort of thing, and has decided that it must be stopped.
Nanny is particularly concerned about the fact that children sit on Santa's lap, as we all know Nanny has told everyone that all adults are paedophiles.
This message is, because it is constantly repeated, now considered to be fact. Over the last couple of years regular "hue and cries" erupt in towns and cities across Britain, as the latest "paedo" suspect is identified by a baying mob.
These scenes are more reminiscent of the witch lynching mobs of the 16th century, rather than the "educated enlightened times" of the 21st. Indeed, one hapless paediatrician found himself on the wrong end of a mob only a year ago; because there was a sign outside his office containing the word paeditrician>
The ignorance of the mob, encouraged by Nanny, knows no bounds!.
Anyhoo, Nanny's attention has now turned to the threat posed by Santa, and the fact that children sit on his lap.
Quite clearly this poses an unacceptable risk, even though the child's parents are in the same room with Santa.
Small details like this do not concern Nanny, after all she is of the belief that the state is better at bringing up children than the parents.
Now department stores, toy shops and shopping centres have bowed to Nanny's will and have banned children from sitting on Santa's knee.
Instead, children must sit on a stool next to him and they are most certainly not allowed to touch him.
Alison Burney, of Dream Time Events, which provides the grotto at Bluewater shopping centre said:
"Unfortunately, people in this day and age just don't look favourably on a child sitting on Santa's knee.
So we train our Santas not to do it.
Having said that, if a toddler jumped into Santa's hands, then he wouldn't just drop the child."
At Lakeside shopping centre, Thurrock, a spokeswoman is quoted as saying:
"Children are not allowed to sit on Santa's knee
because all our Santas go through rigorous police checks,
and we're advised on the basis of that training to ask the Santas not to touch the children."
The magic of Nanny's Christmas!