Revived in the 1960's is was used against lazy black men. Notice Pookie is an African Lion singing Motown.
Soupy Sales - Pookie does Motown
Now, in this case the lying African uses Pookie to describe a lazy blackman who will not vote.
Barack Obama Cousin Pookie
Notice the black ladies behind him as they 'get it' while the non-black ladies do not! It is sort of an insider black joke. I had to have a black friend give me the skinny on the term "Pookie"!