Anal Sex Anatomy – An illustrated explanation Posted on 26 Dec, 201527 Dec, 2015 by Max Private This content is restricted to site members. If you are an existing user, please login. New users may register below. For Terms and Conditions (T&C's) go to the Member/Register page.Existing Users Log InUsernamePassword Remember Me Forgot password? Click here to resetNew User? Click here to register Posted in Anal, Beginners, Health & Medical.