"Snake oil" refers to deceptive marketing practices, particularly in the context of fraudulent health products. The term originated from 19th-century traveling salesmen who sold fake medicines, claiming they could cure various ailments. These products often contained little to no effective ingredients, misleading consumers into believing they were purchasing genuine remedies. The concept of snake oil has since evolved to describe any form of deception or trickery, especially in business and advertising. It highlights the importance of skepticism and critical thinking when evaluating claims, as many products may not deliver the promised benefits, leading to potential harm or financial loss for consumers.