PJO refers to the 5 book series Percy Jackson and the Olympians by Rick Riordaout greek mythology.
On some sites this also extends to the spin off series about Roman mythology Heroes of Olympus (HoO).
The two books narrated by Percy Jackson but not really connected Percy Jackson and the Greek Gods and Percy Jackson and the Greek Heroes as well as Percy Jackson the Demigod Files and Heroes of Olympus the Demigod Dairies.
The spin off trilogy about Egyptian mythology The Kane Chronicles.
The Kane Chronicles/Percy Jackson crossover short e books which is now 1 book called demigods and magicians.
The spin off about Norse mythology Magnus Chase and the Gods of Asgard
The spin off series coming full circle back to greek with Trials of Apollo.
Combination of "Po" (yes) and "Jo" (no) in Albanian.
"Pjo" is a smart reply when neither or both yes or no is felt as a response.
FRIEND: "Mund t’ju ndihmoj?" (Can I help you?)
YOU: "PJO"
whether or not you want help, could care less, or are content either way -- with "pjo" you allow others to interpret and therefore, choose YES or NO for YOU.
One of the biggest Instagram fanpages for the collection of fantasy books by Rick Riordan, often referred to as "Riordanverse books". They only post original content and mostly post memes.
Did you see schist_another_dam_pjo_fangirl's new post?