In 1965, a private investigator named Harold Lipset appeared before a Senate subcommittee and took a sip from a martini. That part was a little unusual, but it was what the glass contained that shocked lawmakers. The pimento in the facsimile of an olive concealed a miniature recording device; the toothpick was an antenna. Near the end of his testimony, Lipset played back his own opening statement. He had been recording the whole time.