The word rainbow fart is an imitation of Korean, and the words are exaggerated. Common rice circle language and idols in the eyes of idolize girls are very good, whatever you think is fine.
Extended data
The word "rainbow fart" originated from 20 17 girls in idolize, also known as rice circles, which is a necessary accomplishment for girls in idolize.
The word "rainbow fart" became popular on 20 17. Because the online drama "Soul of the Town" became popular again, various expression packs were made. Just like praising a person, but there is no vocabulary to praise, then "rainbow fart" is a great substitute word.
Baidu encyclopedia-rainbow fart