As soon as he realizes she's trying to grab (?) him he jerks his head back. A moment later he rest of him follows as he takes a full step back. Wow, does this girl know the meaning of personal space? Clearly she doesn't because she just tried to grab his hair or something.

"Please don't do that." He says, looking at her as though she's the one with antlers. He doesn't even want to be polite about it, but he honestly has no idea what else to say. This isn't the kind of thing he thought he'd ever be giving a lecture on.