The 'Shart in Mart' meme taps into the universal dread of a sudden gastrointestinal emergency in a public setting, specifically a big-box retailer like Walmart. Combining gross-out humor with the relatable stress of retail environments, the phrase became a rhyming catchphrase across platforms like Reddit, Twitter, and TikTok. It often features images of distressed shoppers, messy aisles, or panicked reaction faces to illustrate the absolute worst-case scenario of a shopping trip. The meme serves as a cornerstone of 'cursed' internet humor, highlighting the chaotic and unpredictable nature of public life through a lens of absurd, bathroom-centric comedy.