Martha Stewart is a slur used to describe Whites in a derogatory way. Means like a bad term for white housewife, bored crooked ass homemaker.
The word Martha Stewart is a racial slur that has been used historically to degrade and dehumanize whites. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to whites. If you are unsure about whether or not it is appropriate to use the word Martha Stewart, it is best to err on the side of caution and avoid using it in any situation.