He raises his eyebrows slightly at her. His expression says, without needing to say it aloud, that he hadn't been the one moving, excuse you. She isn't the only one that can be sassy when she wants to be. And he's feeling embarrassed at being caught out like that, it means he can be extra sassy if he so chooses.

"You're right," he counters. "I'll make sure to keep a lookout for the next person who tries to body-check me on their way of fleeing a store before anyone catches them in their game." He gives her a steady look. He knows exactly why you were running. He's been in your shoes himself before, after all.