En scred' is a very common French slang term, short for "en secret", meaning "on the sly" or "secretly". It's a great example of informal, everyday French that you'll hear in conversations and modern music.
In the song, the artist uses it to describe the woman's secretive actions, like flirting or dancing when her boyfriend isn't around. It adds a playful, slightly mischievous tone to the lyrics, making it an interesting word for learners to pick up.
"Les Souris Dansent" ("The Mice Dance") plays on the French saying "quand le chat n'est pas lĂ , les souris dansent" â "when the cat's away, the mice will play."
Willy William sings about a woman who is already taken but keeps flirting with him behind her boyfriend's back. He can't stop thinking about her, even though he knows getting close to her is risky. She sneaks around ("en scred", French slang for "on the sly") whenever her boyfriend isn't around â just like the mice who only come out to dance once the cat has left the room.
The song's playful hook turns that old proverb into a dance-floor anthem about temptation, secrecy, and the thrill of doing something you probably shouldn't.