What is does do is put far greater pressure on detectives to put up or shut up.

BBC: Police bail in the dock

"We want George Bush to put up or shut up, " Cleland said.

CNN: Political drama unfolds as letter carriers fail to deliver

When John Major resigned the leadership of the Conservative Party in 1995, inviting detractors to "put up or shut up", John Redwood challenged him, standing on a Eurosceptic platform.

BBC: John Redwood

Tesco is expected to be asked by the Takeover Panel, responsible for mergers and acquisitions in the UK, to make a "put up or shut up" statement about its intentions.

BBC: Timetable of a merger

Last month, The Takeover Panel--the U.K.'s takeover regulator--set a put up or shut up deadline of 5 p.m. on December 15 for Macquarie Bank, Australia's biggest investment bank, to come forward with a bid for the LSE.

FORBES: Magazine Article

Now club officials have written to the French club, and made them aware in the strongest terms that they must either put up, or shut up.

CNN: Man United warn Le Havre over Pogba claims

But as the second half of 2003 (put-up or shut-up time for the much-anticipated turnaround in corporate spending) approaches--along with the notoriously bearish summer months (remember July last year?)--several growth-focused newsletter editors are selling stocks that show signs of weakness.

FORBES: Losing Your Laggards

It is time the critics of the Second Amendment put up and repeal it, or shut up about violating it.

FORBES: Gun Control Tramples On The Certain Virtues Of A Heavily Armed Citizenry