Thanks Malcolm just what I was looking for.

That the gowd in the tike has ta'en a thin disguise sounds like a strike at the new rich mothers would often be heard to say to unkempt weans "Yer a clairty tike(tyke)"

this would seem to follow from the first verse which talks of the servent in the maister's bed or trying to be what you were not born to.

Last verse has got me stuck will have to give it some thought.