"Here’s the story that was most commonly told about Pressler: In trying to leave a hearing, he once mistakenly walked into a closet behind the dais, rather than into the anteroom, and closed the door behind him. Several minutes later, he backed out of the closet and, in an effort to disguise his error, waved good-bye greetings to his imaginary friends in the closet. Whether or not the story is true (I have my doubts), it reflects how Pressler was regarded in the Senate."
http://m.nationalreview.com/corner/390085/re-larry-pressler-ed-whelan
