The 'Big Back' trend is a viral internet phenomenon that took over TikTok and social media in early 2024, characterized by users humorously calling themselves or their friends 'big backed' after indulging in large meals or snacks. The term, often accompanied by a specific catchy song or voiceover, playfully suggests that one's back is physically broadening due to a healthy appetite. It shifted from a potential insult to a lighthearted badge of honor within the foodie community, used to narrate scenes of ordering excessive fast food or sneaking treats late at night. The trend thrives on relatability, turning the simple act of being hungry into a comedic performance that celebrates appetite over aesthetic perfection.