Do you know what "juicy three" means?

Hello! It's been a year since I came to Korea, and I posted asking for recommendations for YouTubers or streamers in Hongdae. Someone commented 'juicy three' and I'm not sure what that means. If anyone knows, please explain! I tried searching but couldn't find anything that made sense. I'm studying Korean diligently, but sometimes it's difficult when I come across expressions I don't know. I would really appreciate any good explanations or helpful resources!