> The German acronym (DDR) is much better known among Eastern Europeans.

And in the UK. Presumably because it was used in athletic meetings and on cars. Never seen 'GDR', we'd just use 'East Germany'.

I have seen GDR used in the UK. But then again not many people refer to North Korea by its official name here.

The river Taff flows through Cardiff, and 'taffy' was used as a derogatory term for Welsh people from this origin.

I can't pretend I've heard anyone use it since the 80s.

I'm in my late twenties, grew up in the south west. This is my first time hearing about this term