Antoine Daniel is a French YouTuber known for long-form comedy commentary, and this short clip takes its title from the French term MST, short for maladies sexuellement transmissibles, meaning sexually transmitted infections. Rather than being tied to one widely documented viral moment, it circulates mainly among French-speaking fans who recognise his voice and delivery instantly. Its staying power comes from that familiarity: a brief, awkward health reference works as a versatile reaction, especially in edits where a joke, date or decision suddenly turns uncomfortable.