What is the meaning of Joj?

A nonsense word commonly used in YouTube Poop by playing an audio clip forward and in reverse consecutively; said in reference to this editing style, and to describe palindromes and humorously symmetrized images.

she

heron

to judge

common raven (Corvus corax)

raven, crow

to her (clitic dative singular of òna (“she”))

her, of hers (clitic dative singular of òna (“she”))

woe! alas!

Source: wiktionary.org