Pizza Nigger is a slur used to describe Italians in a derogatory way. Italians are said to wholly enjoy pizza, as it is considered their national dish to the rest of the world.
The word Pizza Nigger is a racial slur that has been used historically to degrade and dehumanize italians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to italians. If you are unsure about whether or not it is appropriate to use the word Pizza Nigger, it is best to err on the side of caution and avoid using it in any situation.