You wouldn't legally be allowed in a women's room. If you got sent to prison you'd get sent to prison with men (Yeah... nothing can go wrong there)... there are MANY problems with not legally recognizing a gender change.
---------- Post added 2012-01-17 at 02:51 AM ----------
Nature goofs sometimes. Sometimes it puts a structurally female brain in a biologically male body. Same is true of the opposite. Nature gets it right 99.999% of the time though.