So when she called him a Heathcliff, she was calling him a jerk? He'd glare at her, but at least he's an interesting jerk. That has to be a little better than a regular one.

With his utter lack of understanding of social cues, Zack promptly looks the first three people he sees straight in the eye. None of them seem to be able to hold his gaze, and look down. It makes him want to poke them. Maybe he will after he's filled his belly. Which, like the rest of his body is supernaturally-imbued dust and sand, so technically he doesn't have a stomach. However a good meal does nourish on some level and keeps the pain at bay.

“As long as there’s food, I don't mind. Will they ask me for money?”