Cooper, 52, named his newborn son after his father, Wyatt Emory Cooper, who died during open-heart surgery when Anderson was just 10.
The jokes revolved around respective countries' celebrities, politicians and even basic facts.
Jose Oliveira became a celebrity after people noticed his uncanny resemblance to retired president Obama.
On Twitter, Dr Ndii followers who number over 750K tag him on matters economics for guidance and to hear his perspectives.