Well three tits is better than two especially if you have two cocks???
I know—imagine the double-cocked titty-fuck.
Unfortunately, the only way I could think for this to be achieved (unless god really, really loved you and I mean from birth,) would be: http://en.wikipedia.org/wiki/Genital_bisection :shocked:
I certainly won't be getting a meatotomy any time soon, no matter how many breasts she has.