For gender there is a push-pull of human development vs. cultural preferences.  If there is a question, pre-natal human development will prefer female.  If there is a question a birth, doctors will patch you up as male.  At puberty he discovers she grows to resemble mom.

As for proclamations of Lady Gaga being hermaphroditic, so far I only see grounds for conjecture of suspicion of ambiguous genitalia, of which I care not.  Moreover, 'intersexed' is the euphemism, though somewhat vague--encompassing more possibilities.  You go girl; I'll listen.