My first thought on the first one is, "oh, it's a woman" (typical male, first thing he notices [and, admittedly, it might not be -- it might just be the shirt buckling funny, but that's why I said, "first thought"]), and my first thought on the second one was, "oh, it's a ...wait a minute...it might not be..."
My dad always told me, if you can't tell, who cares? And at the time, I thought he meant that if you couldn't tell, then disregard, but in hindsight, he might've meant, if you can't tell, shag it anyway...
So to answer the second question, my ...erm... my id.