bust a gut
English
Verb
bust a gut (third-person singular simple present busts a gut, present participle busting a gut, simple past and past participle busted a gut)
- (Canada, US, slang) To work or try very hard.
- I had to really bust a gut to get it done by the deadline
- (Canada, US, slang) To laugh very hard.
- Something about the way he said that made me just bust a gut: I practically died laughing!