The smoking gun was the lipstick on his collar.
Police are still looking for a smoking gun in the kidnapping case.
Upon hearing the tape, Conable stated that it "looked like a smoking gun," meaning that from the tape it was clear that Nixon had approved the cover up.
Little of the mud thrown at Clinton over the Whitewater affair has stuck, so federal Prosecutor Starr must now look for a smoking gun.
The president's distrust of Mr Kissinger did much to destroy his administration. Nixon's downfall was in the end brought about by the "smoking gun" contained in his own White House tapes.
Finally, a fourth fowl sped past and this time the surgeon's weapon pointed sky wards. BOOM! The surgeon lowered his smoking gun and turned nonchalantly to the pathologist beside him.
