Children are microwaving NeeDoh gel-filled sensory toys after learning the trick from social media videos, resulting in serious burns to hands, arms, faces, and laps that have sent kids to hospitals requiring skin grafts and intensive care. This trend is spreading rapidly across platforms including YouTube and TikTok, with doctors and fire marshals now issuing public warnings to parents. The underlying mechanism — the gel heats explosively when microwaved, similar to how hot water behaves — appears simple enough that children are replicating it at school and at home after watching peers perform it online.