nig-nog

noun2

1. •
   (slang, offensive) A person of color, especially, a black person.

   • He'll need this in a white community – He gets "Sambo" and "Nig-nog" at school already – if he's proud of himself it will be easier for him in the long run. — 1977
2. •
   (slang) A foolish person; hence, a raw and unskilled recruit.

   • A straight line, you heaving nig-nogs, a straight line. — 1962