From Longman Dictionary of Contemporary Englishget (somebody) off somebody’s backget (somebody) off somebody’s backspokenANNOY to stop annoying someone with a lot of questions, criticisms etc, or to make someone stop annoying you in this way Maybe the only way to get him off my back is to tell him the truth. Do me a favour and get off my back! → back
Examples from the Corpus
get off my back• Why don't you guys get off my back?• I'll do it in a minute. Just get off my back!• For the love of Mike, Candy, will you please get off my back about Adam Burns? 