Skuddder bottom, often called skid mark, is a term used to describe a smudge left behind by a automobile while sliding. Skudd bottoms are visible on roads while slippery weather, like heavy rain or snow. They act as warnings to likely slipping or lack of traction and must be approached with caution. Drivers are cautioned to lower their speed and keep up a safe distance from skuddder bottoms to avoid any potential accidents. Stay safe on the roads!