"This is not an objective, anatomical term, neither does it imply coitus. It connects with that extension of meaning of the unprintable, a fool, or a person whom one does not like." ["Dictionary of Rhyming Slang," 1960]
"Cunnilingus was a very familiar manifestation in classical times; ... it tends to be especially prevalent at all periods of high civilization." [Havelock Ellis, 1905]"The word pussie is now used of a woman" [Philip Stubbes, "The Anatomie of Abuses," 1583]But the use of pussy as a term of endearment argues against the vaginal sense being generally known before late 19c., e.g.:" 'What do you think, pussy?' said her father to Eva." [Harriet Beecher Stowe, "Uncle Tom's Cabin," 1852]Pussy-whipped first attested 1956.