Do you mean it sounds like "Boohs", if that's the case then it is "Booze"
The answer is a direct object
In "their eyes were Watching God", Hurston who is trying to recognize that folk culture which is represented in the identification of black characters. Their identification is portrayed with "front-porch culture" the same case applies to their language. They go together hand in hand, as the way font porch represents the community and its life.
The language is different from white American, that is why it places the black's identification apart. Hurston alternates between Black English as well as sophisticated speech. The picture that Jane has two identities is enhanced. Since she is part of white, she had a good education, lived a good life, has a straight hair and she is capable of speaking of being sophisticated.
She relies on her dialect of Black English so as to identify with other black people who are in her community.