Yard Ape is a slur used to describe Blacks in a derogatory way. Low-income housing quite often has no air conditioning. Thus, people who live in housing projects often sit out front to keep cool. This slur originated in the 60's and 70's.
The word Yard Ape is a racial slur that has been used historically to degrade and dehumanize blacks. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to blacks. If you are unsure about whether or not it is appropriate to use the word Yard Ape, it is best to err on the side of caution and avoid using it in any situation.