What is rot gut whiskey?

Rot gut whiskey is a type of cheap, low-quality whiskey that is typically made with inferior ingredients and produced quickly and at a low cost. It earned its name due to its harsh taste and negative effects on the body, often causing nausea, headaches, and overall discomfort. Rot gut whiskey is often associated with the American Old West and was popular among cowboys and frontiersmen due to its inexpensive price and high alcohol content. However, in modern times, it is generally considered an inferior and low-class choice compared to higher-quality whiskeys.