blow the whistle (on) (someone or something)(redirected from blow the whistle on it)
blow the whistle (on) (someone or something)
To expose or report something scandalous or deceptive. That company's stock price plummeted after the media blew the whistle on the CEO's embezzlement scandal. If you keep coming in late, I'm going to have to blow the whistle and report you to the department head.