1
general::
Also, bugger off. Go away, as in Bug off before I call the police. Both terms are often used as an imperative, as in the example, and the variant is heard more in Britain than in America. [Slang; c. 1900] For a synonym, see BUZZ OFF.
American Heritage Idioms
2
general::
Phrase(s): bug off
1. Sl. to cease bothering [someone]. • Hey, bug off! Your comments are annoying. • I wish you would bug off! 2. Sl. Get out!; Go away! (Usually Bug off!) • Bug off! Get out of my sight! • Bug off and leave me alone!
McGrawhill's American Idioms And Phrasal Verbs