"What do you mean? You've seen that both forms are physical, not some illusion magic." I say, sitting further into my chair, attempting to calm my skyrocketing heart rate.
"I did notice that, I can't quite figure out the nature of that, but having two forms is preposterous. When you're born, your body knows exactly how it's meant to grow. Your 'second form' is paler, has a different hair color, face structure, the whole yard. That's not possible, a person can't change their blood and vitality to that degree. You would need to have literally had two different bodies, which is not possible." Severus said, coming to a logical conclusion, and thankfully that logic saved me from the discovery of my illogical existence.
I have had two different bodies, this is truly my second one.