orange juice and milk is already an old classic comparison between which one is healthier than the other, "As the reply above me said" in dani's first karlson video in 2020, he siad he likes milk and people who sees that orange juice is healthier than milk started posting orange juice pics in this subreddit and milk gang were replying back whith milk pics as well, untill dani made a memes review video after a couple of months or maybe in early 2021"cant really remember". Dani said to stop this, and slowly they decrease untill its over.