"Hide and seek?" the Doctor repeated, sounding vaguely incredulous. He hadn't had much time for silly child's games in so very long, and to picture this man playing them... Well, no, it was easy to picture, and made him chuckle and give his head a gentle shake. "Then I imagine the entertainment you seek won't be able to hide long, will it? Do try not to get into too much trouble." Likely advice that would go unheeded, but it was worth saying.