Dydd Gwyl Dewi

Well, correct me if I'm wrong, but I seem to remember that there's an old Welsh saying. It goes something like,
'If it snows on St David's Day the English Queen will come to Wales. She will be tricked into saying the magic word 'Senedd' which will devolve all power back to the land. Tax raising powers, lawmaking japes and even the power to bestow a bank holiday across the country.'
Byddwch lawen.