ratbag
From Longman Dictionary of Contemporary Englishratbagrat‧bag /ˈrætbæɡ/ noun [countable] British English informalBAD PERSON an unpleasant personExamples from the Corpusratbag• You look like a ratbag and as if you are half-starved.• He's got three children: Paula, Graham and little ratbag Katie.• You're a miserable old ratbag and they obviously don't want you.