"When isn't he in trouble?" Donna commented jokingly to Jack, whilst she finished making the drinks for her and Jack, taking his over to him and taking a seat at the table. 

"How old is the Doctor, Jack?" Donna asked curiously. The Doctor had never really discussed his age with Donna, but she knew that he was old. She could always see it in his eyes. "What happens if it's just a kind of 'old age' illness?"