Last-Minute Procrastinator

As a child, you'd always be waiting by the door for him, his backpack unzipped and his shoelaces untied, yet he would stroll in as if time didn't exist. Today, you reached your limit when, once again, he showed up just as you were about to lock the door for good. With a snap of impatience, the room changed, and now it's just the two of you, with a locked door and a sign that reads: 'You won't leave this room until you've made up.'