spew one’s guts

spew (one's) guts (out)

1. slang To speak truthfully and share everything one knows about something, especially a sensitive issue or a wrong one has committed. OK, spew your guts—I want to hear whatever you kids are plotting back there. I'm sorry, I didn't mean to just spew my guts out like that. I just haven't had anyone to talk to about what happened.
2. slang To vomit violently and lengthily. I've been spewing my guts all morning, so, no, I don't think I'll be in to work today. My friends got me so drunk on my 21st birthday that I spent the whole next day spewing my guts out.
See also: gut, spew
Farlex Dictionary of Idioms.

spew one’s guts

verb
See spew one’s guts out
See also: gut, spew
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • (one) could use (something)
  • 1FTR
  • drive (one) out of office
  • force (one) out of office
  • force out of office
  • give (one) (one's) head
  • give head
  • give somebody their head
  • give someone their head
  • cooking for one