Originating from "it boy" and along the same lines as "4th gen it boy," this term is used to described Ricky from ZEROBASEONE, globally the most popular and well known male 5th generation K-pop idol worldwide.
Although it is mostly used as an informal label by fans, a K-pop idol's status as an "it boy" is determined by their viral moments, how often they go viral, how many people in the general public and non-K-pop fans know of them, their impact in numbers and social media engagements, and the trends revolving around them, among other factors.
Ricky is trending again? He really is the indisputable 5th gen it boy.