Glass Nigger is a slur used to describe Arabs in a derogatory way. If an atomic weapon were to go off, sand niggers would become glass niggers.
The word Glass Nigger is a racial slur that has been used historically to degrade and dehumanize arabs. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to arabs. If you are unsure about whether or not it is appropriate to use the word Glass Nigger, it is best to err on the side of caution and avoid using it in any situation.