The New Jungle King: Panel 29

In a last-ditch effort to prove his superiority over this unruly black warrior, Tarzan growled, "All in Africa know Tarzan king!  Jabari learn!!" and sent his fist flying into his opponent's jaw.

Jabari grunted with the sudden attack, but his resolve was still intact.  The knowledge that he had instilled fear into the jungle lord gave him strength.