What does 'running fast and fishtailing' mean?

[OClayton]

Fishtailing is a common issue with rear-wheel-drive vehicles, often leading to various traffic accidents, especially when driving in rain, snow, gravel, or on slippery surfaces, where reducing speed and driving cautiously is essential to avoid fishtailing. Additional details are as follows: Drifting: Fishtailing is also known as drifting, where the rear wheels lose most (or all) of their grip, while the front wheels must maintain their grip. At this point, as long as there is a certain lateral force on the front wheels, the car will fishtail, resulting in a drift. Causes: Whether fishtailing ultimately occurs depends on multiple factors, including the friction coefficient between the tires and the road surface, the vehicle's speed, braking intensity, throttle size, front wheel angle, weight distribution, wheelbase, and suspension stiffness.