To think this entire article in the Daily Mail is made up?

[TheCrackFox]

The premise of the whole article is that children nowadays are so spoilt that they are celebrating their birthday every six months. I refuse to believe that this has ever happened. And, no, the Queen doesn't count as a valid example.

bollocks

@ Journeywoman.

'Oh, it must be made up! Although we do it / are thinking of doing it'...

I think we can safely say, going by this thread alone, that it's prevalent enough.