Skuddder bottom, also known as skid mark, is a term used to describe a smudge left behind by a vehicle while sliding. Skudderbutts are noticeable on highways in the midst of slippery weather, such as heavy rain or snow. They serve as indicators to possible sliding or lack of traction and must be handled carefully. Motorists are advised to lower their speed and preserve a safe distance from skudderbutts to steer clear of any potential collisions. Stay safe on the roads!