No, of course she didn't have any gum. That had really been a shot in the dark, but it was worth establishing outright just how fucked they were. He sighed, pacing in a small circle as he tried to think of something else. He stopped and looked up when she asked her question- what was the point of even explaining? He was pissed off- it was making him impatient. He knew that he had to calm down, they had to work together.
"It jams the locking mechanism. If our jailer turns the key, it appears to lock, but in fact doesn't. It does of course require him to actually return at some point, but the element of surprise is rather worth the wait," he explained, with a bit of a smile. "Although, fresh breath is certainly an added bonus."