Serial sodomite (or so the Malaysian government would have everyone believe) Anwar Ibrahim apparently can prove the negative - there's no medical evidence that he did (or, as he puts it, there is medical evidence that no-one, including him, did) sodomize a male aide. I always thought it was no coincidence that within a short time after we learnt of the semen-stained blue dress belonging to Monica Lewinsky, that a semen-stained mattress was produced at the trial of Anwar Ibrahim. That old fraud Mahathir never did anything by halves.
http://www.iht.com/articles/2008/07/29/ ... laysia.php