[And he's moving a little away. He's used to this kind of stuff from the kids at school. You say "don't touch me" and the first thing they do is get in your space and try and touch you.]

It is so much simpler to claim you have the immunity to the poison in my veins, but testing this is not something that can be performed in such an open and vulnerable way. Humans cannot withstand this deadly venom. I do not wish to be the end of your life.