I am pansexual and demiboy. Demiboy means: A demiboy (also called a demiguy, demiman, demimale, or demidude person) is a gender identity describing someone who partially identifies as a man or boy, regardless of their assigned gender at birth. In addition to feeling partially like a boy or man, demiboys also feel partly outside the binary. That can include anything under the non-binary umbrella like agender, genderqueer, or xenogenders for example.