What does boofing drugs or alcohol mean? Boofing is a slang descriptor used to describe the process of ingesting a substance through the anus. It’s also called booty bumping, hooping, plugging, butt chugging, or UYB (up your bum). The reason people look to absorb drugs this way is that it results in a much faster high. The thin layer of skin and larger number of blood vessels in the rectum allows substances to reach the bloodstream quickly. It’s why suppositories are an effective treatment taken in the same way.