Most videos feature a kitten opening its mouth in rhythm with the "pop-pop-pop" of the exhaust.

In Brazilian motorcycle culture, "cortando de giro" refers to pinning the throttle until the engine hits its RPM limit, causing the electronic fuel injection or ignition to cut out. This produces a rapid, staccato popping sound that enthusiasts find exhilarating but is technically stressful for the motor.

The joke stems from the domestic kitten's "motorzinho" (little motor) sound—the purr—being jokingly reimagined as a literal four-cylinder engine.

The (Hornet Kitten) is a popular Brazilian internet meme that humorously compares the loud, aggressive sound of a high-performance motorcycle engine to a kitten's purring or vocalizations. It typically features videos of kittens "mimicking" the sound of a Honda CB600F Hornet , one of Brazil's most iconic sportbikes. What is "Cortando de Giro"?

A kitten purring while being petted is compared to the idling sound of a motorcycle.