Vroum vroum is a widely recognised onomatopoeia for a car engine, used in French and English children's play, comics and everyday speech to imitate a revving motor. As a short audio clip, it circulates on soundboards and in meme edits where the sound itself does the joking, rather than any single film or viral video behind it. Its staying power comes from that simplicity: anyone instantly understands a car starting, speeding up or showing off, so creators keep reaching for it for quick, visual gags about driving, racing and pretend vehicles.