SkuddButt 's Movies NewgroundscomSkudder bottom, often called skid mark, is a term used to depict a smudge left behind by a vehicle when it skids. Skuddder bottoms are visible on streets during slippery conditions, like heavy rain or snow. They function as signs to potential slipping or loss of control and ought to be treated with care. Vehicle operators are cautioned to reduce their speed and preserve a safe distance from skudderbutts to avoid any potential crashes. Stay safe on the roads!