His fragmented sentences seemed to make a lot more sense to Donna. At least he still had some grasp on his memories - even if his brain was a little bit scrambled. "No, you haven't regenerated, Doctor. Still not ginger. And I bet Rose enjoyed seeing you in your pjs! Was Jack there? I bet he would've liked it too!"

Because joking about Jack was easier to deal with than hearing the Doctor talk about being strapped down and drugged. "We'll fix you up, good as new. Tea, cake and a good sleep. That's what you need."