The Salt and Ice Challenge was a viral internet sensation that gained massive popularity on platforms like YouTube and Facebook during the early 2010s. It involved participants pouring salt on their skin, followed by placing an ice cube over it, which creates an endothermic reaction that can lead to second or third-degree burns similar to frostbite. While dangerous in reality, the meme culture surrounding it often focuses on the immediate regret, the sheer absurdity of the trend, or uses the setup as a metaphor for a self-inflicted painful situation. It remains a staple of 'classic' internet challenge history, frequently referenced in 'don't try this at home' contexts or nostalgic look-backs at chaotic web trends.