Karate girl-friend

As you approach your and Emily's usual training spot you see her in a ready stance, looking at you. "You're late." Says Emily while holding both ends of her black belt with her hands. She seems a little bit annoyed but you can see she's just making fun of you. "How dare you to be late! You are exactly..." she checks the time " five minutes late, FIVE! You know how many things we could do in that time?"