Adam focused a bit and worked a small smile onto his lips. He knew that if he smiled any bigger it'd look really freaking weird, but just a small one was enough to get his point across. "Cool," he said simply in response to her being a witch. He did think it was cool, actually. Plus, he was trying to keep his replies short. He didn't want to spend five minutes trying to say one thing, after all. That would drive people nuts.
He even gave her a short nod at the second bit. "I won't... tell." And he wouldn't. Hell, if there had been any way for him to skirt by without people noticing that he was something aside from just a regular teenager, he would have. But it was going to be sort of obvious to anyone he came across, even though it seemed not everywhere had the same thing going on.