bust one's balls

== English == === Pronunciation === === Verb === bust one's balls (third-person singular simple present busts one's balls, present participle busting one's balls, simple past and past participle busted one's balls or bust one's balls) (idiomatic, vulgar) To work very hard; to put in a lot of effort. ==== Synonyms ==== bust one's arse bust one's butt ==== Related terms ==== bust someone's balls ==== See also ==== bust a nut