Skudderbutt, also known as skid spot, is a term used to depict a smudge left behind by a car when it skids. Skudder bottoms are noticeable on roads during slippery weather, including heavy rain or snow. They function as indicators to potential slipping or lack of traction and should be handled carefully. Drivers are recommended to reduce their speed and keep up a safe distance from skuddderbutts to steer clear of any potential collisions. Stay safe on the roads!