Tu bluffes, Martoni has become a recognisable French catchphrase online, shared as a short reaction sound for calling out exaggeration. Its appeal lies in the name itself, which gives the line a personal, almost theatrical target, rather than a generic accusation of lying. On soundboards and in short-form video, it is used in French-language memes, gaming clips and reaction edits where one person is caught overstating a story or a skill. Because the phrase is short, clear and easy to drop into a joke, it continues to circulate as a quick shorthand for disbelief.