In Brazil, SAMU is the public mobile emergency medical service, so the phrase 'chama o Samu' literally means call for an ambulance. Online, the line has become a running joke in Brazilian meme culture, shouted whenever someone pretends to faint, gets roasted or suffers a comic mishap that is treated as a medical emergency. Because the call is so recognisable and the stretched final syllable makes it sound even more desperate, short video creators keep reusing it as a quick punchline for exaggerated reactions rather than for any real emergency.