You definately know you're an ex-Muslim when:
* You don't avert your eyes from a naked body even if shown in an erotic context.
* You, in fact, enjoy watching porn and/or masturbate without feeling dirty.
* You don't have to worry about ripping one any moment, which would invalidate your ablution.
* You make blasphemous pictures about Allah and his prophet.
* You can laugh about everything, including atheism and in particular all religions.
* You declare your religous cousin a god, spread out a prayer mat in front of him and begin worshipping him, just to prove that Allah will not strike me down and to make him feel a bit godlike, though I guess he felt more awkward about it.