For a few moments, Zack just sits very still, but he is holding a cheeseburger. How can one have a cheeseburger and not take a bite? He does it slowly though, so hopefully it won't interfere with what Alec is doing. Too much.

The magic was used when Abe was making Zack, or at least modifying him. It may be from his very creation, but it's not part of what makes him Zack. In fact it's the opposite. It impedes what should make him Zack. It's a sort of lumpy, add-on, which suits its purpose very well but is hardly refined or elegant.