The Goncourts Tell All

Robert de Montesquiou, the aesthete who was the model for Proust's Baron de Charlus (perhaps the most intriguing and certainly the most  amusing character of the 2000 personages, real or fictional, in À la recherche du temps perdu), had his first love affair

"with a female ventriloquist who, while Montesquiou was straining to achieve his climax, would imitate the drunken voice of a pimp, threatening the aristocratic client."

Pages from the Goncourt Journals, (1851-1896) the Goncourt Brothers, Edmund & Jules, translator Robert Baldick, 2006.