| A life ruined
Probably the most universally despised sub-group of humanity, for no reason other than being both gwar and a step-child. To be subject to one of these afflictions is bad enough, to suffer both is sheer hell.
Some poor unfortunates are saddled with all manner of crosses to bear: mongs, the Welsh etc. But save thy pity for these afflicted souls.
The term is sometimes used to describe a degree of shoeing (eg. 'I will beat you like a Gwar step-child.') when using the term 'rented Chinaman' would be considered politically incorrect.
The only thing worse would be a Welsh gwar step-child.