Ora ora ora refers to the nonsensical battlecries of Jotaro Kujo in the manga and anime serieies of JoJo’s Bizarre Adventure.
The words are exclaimed by Jotaro Kujo and his Stand (visual manifestation of life energy) during battles, with each delivered punch.
“Ora ora ora” is exclaimed by Star Platinum, the Stand of Jotaro Kujo, with the first instance of the phrase appearing in JoJo’s Bizarre Adventures Part 3: Stardust Crusaders’ Chapter 119.
The chapter was released as a manga on May 8th, 1989.
“Ora ora ora” has since then been a characteristic element of the manga and anime series, with various stands exclaiming other phrases such as Muda Muda Muda.
The phrase grew popular on image boards, among fans of JoJo’s Bizarre Adventures.
The most notable places where “ora ora ora” showed up in the 2000’s were 4chan and the Japanese image board, 2ch.
The term “ora” was first defined on Urban Dictionary in 2006, with several other entries having been written on the phrase since then.