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They spill the beans, exposing the practice for what it is.
She must be worried that he was going to spill the beans to her father.
I did not want to spill the beans on my theory so soon.
"I tried to talk him out of it, but he was determined to spill the beans."
Yes, sir, he beat the good thing and spilled the beans.
Still, there was no reason to immediately spill all the beans.
You know, just to have a chance to spill the beans to someone and leave him sitting there with his mouth hanging open.
"If you go to a public hospital, someone would spill the beans."
They were only too happy to spill the beans, in return for a detailed report on you and this meeting.
Make sure you don't spill the beans and tell them how to do things.
Synonyme:
Idiome