Sonnerie is the French word for a bell or ringtone, and lycée recordings like this one circulate widely among students who use them for pranks at school and online. The embois version became known as a ready made classroom trick, played from a phone to mimic the official end of class signal. Teachers and students recognise the pattern immediately in France, which explains why the joke works so quickly. It remains popular in short prank clips, edits and soundboards where a believable school atmosphere is needed instantly.