busting a nut

Verb

bust a nut (third-person singular simple present busts a nut, present participle busting a nut, simple past and past participle busted a nut or bust a nut)

1. (idiomatic, literally, slang, vulgar) To ejaculate.
   • Genter was so excited he like to bust a nut. He had a telephone plugged in at the table and called people up.1938, Richard Hallas, You Play the Black and the Red Comes Up, page 74

   Synonyms:

   blow a nut, bust, nut, blow one's load, blow one's wad, breed, come, cream, cum, ejaculate

2. (idiomatic, slang, vulgar) To work very hard; to put in a lot of effort.

   Synonyms:

   bust one's balls, bust one's butt