Wigger is a slur used to describe Whites in a derogatory way. Affluent suburban white kids who dress, talk and act like they were brought up in the ghetto.
The word Wigger 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 Wigger, it is best to err on the side of caution and avoid using it in any situation.