Perineum sunning, also colloquially known as 'butthole sunning,' became an internet sensation in late 2019 after wellness influencer Metaphysical Meagan shared the practice on Instagram, claiming it provided more energy than a cup of coffee. The practice involves exposing the perineum to direct sunlight, a concept supposedly rooted in ancient Taoist traditions but met with widespread medical skepticism and immediate viral ridicule. The meme typically utilizes images of people in acrobatic, legs-up poses or depictions of glowing, transcendent beings to represent the absurd 'benefits' of the trend. It is frequently used to satirize extreme wellness culture, influencer pseudo-science, and the lengths people will go to for a 'health' hack.