In the new issue of Rolling Stone, John Mayer runs his mouth about a number of personal topics -- we're sure Jennifer Aniston appreciates that -- including his masturbation habits. Thanks for completely over-sharing, John! But he's hardly the only celeb to discuss diddling. Woody Allen and Dudley Moore have some of the more famous and funny quotes about spanking the monkey, but some more recent stars have mouthed off about self-love too. Keep clicking to find out who ...