The 'Soy Sauce on Testicles' meme took the internet by storm in early 2020 after a TikTok user cited a 2013 scientific study suggesting that testicles possess taste receptors. This revelation sparked a massive viral challenge where individuals attempted to 'taste' soy sauce through their skin, leading to a wave of hilarious reaction videos and image macros. While scientists eventually clarified that these receptors are not linked to the brain's gustatory center for flavor perception, the meme lives on as a symbol of how quickly misinformation and curiosity can drive internet trends. It is primarily used to mock impulsive behavior or the absurdity of 'science-based' internet challenges.