Goober is a slur used to describe Whites in a derogatory way. Black racists in NYC area use it to refer to Whites. Interestingly, the goober peanut was one of the food products imported from Africa for the slaves to eat.
The word Goober 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 Goober, it is best to err on the side of caution and avoid using it in any situation.