spill one's guts out

Verb

spill one's guts (third-person singular simple present spills one's guts, present participle spilling one's guts, simple past and past participle spilled one's guts or spilt one's guts)

1. (idiomatic, slang) To confess, or to divulge secrets, typically speaking freely and at length after a change of motive or an incentive.
   • At first, the suspect would not tell us anything about the other participants in the crime. But after being offered a deal, he spilled his guts.

   Synonyms:

   spill the beans

2. (idiomatic, slang) To vomit.
   • He suddenly wanted to vomit, to spill his guts right here on Lake Street in front of the thousands watching.1994, Garth Battista, The runner's literary companion: great stories and poems about running, Breakaway Books, page 102