Girl Dinner became a TikTok phrase in summer 2023, after creator Olivia Maher posted a video describing a simple plate of snacks as her dinner and comparing it to a medieval peasant meal. Viewers quickly adopted the label for their own improvised plates, sharing cheese, bread, pickles, fruit and leftovers without any cooking or presentation. The trend spread through parodies, rankings and opposite versions, and it stuck because it named a common habit with humour rather than shame. It remains a handy shorthand for a low-effort, snack-based meal.