Mister V is a French comedian and creator known for sketches and music that play with everyday language and youth slang, and this short line fits that style. The phrase uses wallah, a slang borrowing widely used in French conversation to insist that something is true, so the joke comes from treating an ordinary statement as a dramatic sworn claim. Shared as a short audio clip, it has circulated among French-speaking meme and video creators who use recognisable spoken reactions rather than full songs. Its appeal is simple: the line is short, quotable and easy to place over everyday exaggeration.